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ACPI: delete tracing macros from drivers/acpi/*.c

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Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Patrick Mochel 2006-06-27 00:41:40 -04:00 committed by Len Brown
parent d7fa2589bb
commit d550d98d33
28 changed files with 862 additions and 1187 deletions
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53
drivers/acpi/ac.c
View File

@ -84,19 +84,18 @@ static int acpi_ac_get_state(struct acpi_ac *ac)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE("acpi_ac_get_state");
if (!ac)
return_VALUE(-EINVAL);
return -EINVAL;
status = acpi_evaluate_integer(ac->handle, "_PSR", NULL, &ac->state);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Error reading AC Adapter state"));
ac->state = ACPI_AC_STATUS_UNKNOWN;
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
@ -109,14 +108,13 @@ static int acpi_ac_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_ac *ac = (struct acpi_ac *)seq->private;
ACPI_FUNCTION_TRACE("acpi_ac_seq_show");
if (!ac)
return_VALUE(0);
return 0;
if (acpi_ac_get_state(ac)) {
seq_puts(seq, "ERROR: Unable to read AC Adapter state\n");
return_VALUE(0);
return 0;
}
seq_puts(seq, "state: ");
@ -132,7 +130,7 @@ static int acpi_ac_seq_show(struct seq_file *seq, void *offset)
break;
}
return_VALUE(0);
return 0;
}
static int acpi_ac_open_fs(struct inode *inode, struct file *file)
@ -144,13 +142,12 @@ static int acpi_ac_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_ac_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_ac_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
}
@ -158,19 +155,18 @@ static int acpi_ac_add_fs(struct acpi_device *device)
entry = create_proc_entry(ACPI_AC_FILE_STATE,
S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_ac_fops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_ac_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_ac_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_AC_FILE_STATE, acpi_device_dir(device));
@ -179,7 +175,7 @@ static int acpi_ac_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
@ -191,13 +187,12 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
struct acpi_ac *ac = (struct acpi_ac *)data;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_ac_notify");
if (!ac)
return_VOID;
return;
if (acpi_bus_get_device(ac->handle, &device))
return_VOID;
return;
switch (event) {
case ACPI_AC_NOTIFY_STATUS:
@ -210,7 +205,7 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static int acpi_ac_add(struct acpi_device *device)
@ -219,14 +214,13 @@ static int acpi_ac_add(struct acpi_device *device)
acpi_status status = AE_OK;
struct acpi_ac *ac = NULL;
ACPI_FUNCTION_TRACE("acpi_ac_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ac = kmalloc(sizeof(struct acpi_ac), GFP_KERNEL);
if (!ac)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(ac, 0, sizeof(struct acpi_ac));
ac->handle = device->handle;
@ -260,7 +254,7 @@ static int acpi_ac_add(struct acpi_device *device)
kfree(ac);
}
return_VALUE(result);
return result;
}
static int acpi_ac_remove(struct acpi_device *device, int type)
@ -268,10 +262,9 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
acpi_status status = AE_OK;
struct acpi_ac *ac = NULL;
ACPI_FUNCTION_TRACE("acpi_ac_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
ac = (struct acpi_ac *)acpi_driver_data(device);
@ -282,38 +275,36 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
kfree(ac);
return_VALUE(0);
return 0;
}
static int __init acpi_ac_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_ac_init");
acpi_ac_dir = proc_mkdir(ACPI_AC_CLASS, acpi_root_dir);
if (!acpi_ac_dir)
return_VALUE(-ENODEV);
return -ENODEV;
acpi_ac_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_ac_driver);
if (result < 0) {
remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_ac_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_ac_exit");
acpi_bus_unregister_driver(&acpi_ac_driver);
remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_ac_init);

82
drivers/acpi/acpi_memhotplug.c
View File

@ -85,12 +85,11 @@ acpi_memory_get_device_resources(struct acpi_memory_device *mem_device)
struct acpi_resource *resource = NULL;
struct acpi_resource_address64 address64;
ACPI_FUNCTION_TRACE("acpi_memory_get_device_resources");
/* Get the range from the _CRS */
status = acpi_get_current_resources(mem_device->handle, &buffer);
if (ACPI_FAILURE(status))
return_VALUE(-EINVAL);
return -EINVAL;
resource = (struct acpi_resource *)buffer.pointer;
status = acpi_resource_to_address64(resource, &address64);
@ -106,7 +105,7 @@ acpi_memory_get_device_resources(struct acpi_memory_device *mem_device)
}
acpi_os_free(buffer.pointer);
return_VALUE(0);
return 0;
}
static int
@ -118,7 +117,6 @@ acpi_memory_get_device(acpi_handle handle,
struct acpi_device *device = NULL;
struct acpi_device *pdevice = NULL;
ACPI_FUNCTION_TRACE("acpi_memory_get_device");
if (!acpi_bus_get_device(handle, &device) && device)
goto end;
@ -126,14 +124,14 @@ acpi_memory_get_device(acpi_handle handle,
status = acpi_get_parent(handle, &phandle);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Cannot find acpi parent"));
return_VALUE(-EINVAL);
return -EINVAL;
}
/* Get the parent device */
status = acpi_bus_get_device(phandle, &pdevice);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Cannot get acpi bus device"));
return_VALUE(-EINVAL);
return -EINVAL;
}
/*
@ -143,29 +141,28 @@ acpi_memory_get_device(acpi_handle handle,
status = acpi_bus_add(&device, pdevice, handle, ACPI_BUS_TYPE_DEVICE);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Cannot add acpi bus"));
return_VALUE(-EINVAL);
return -EINVAL;
}
end:
*mem_device = acpi_driver_data(device);
if (!(*mem_device)) {
printk(KERN_ERR "\n driver data not found");
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static int acpi_memory_check_device(struct acpi_memory_device *mem_device)
{
unsigned long current_status;
ACPI_FUNCTION_TRACE("acpi_memory_check_device");
/* Get device present/absent information from the _STA */
if (ACPI_FAILURE(acpi_evaluate_integer(mem_device->handle, "_STA",
NULL, &current_status)))
return_VALUE(-ENODEV);
return -ENODEV;
/*
* Check for device status. Device should be
* present/enabled/functioning.
@ -173,16 +170,15 @@ static int acpi_memory_check_device(struct acpi_memory_device *mem_device)
if (!((current_status & ACPI_MEMORY_STA_PRESENT)
&& (current_status & ACPI_MEMORY_STA_ENABLED)
&& (current_status & ACPI_MEMORY_STA_FUNCTIONAL)))
return_VALUE(-ENODEV);
return -ENODEV;
return_VALUE(0);
return 0;
}
static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
{
int result;
ACPI_FUNCTION_TRACE("acpi_memory_enable_device");
/* Get the range from the _CRS */
result = acpi_memory_get_device_resources(mem_device);
@ -213,7 +209,6 @@ static int acpi_memory_powerdown_device(struct acpi_memory_device *mem_device)
union acpi_object arg;
unsigned long current_status;
ACPI_FUNCTION_TRACE("acpi_memory_powerdown_device");
/* Issue the _EJ0 command */
arg_list.count = 1;
@ -225,20 +220,20 @@ static int acpi_memory_powerdown_device(struct acpi_memory_device *mem_device)
/* Return on _EJ0 failure */
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "_EJ0 failed"));
return_VALUE(-ENODEV);
return -ENODEV;
}
/* Evalute _STA to check if the device is disabled */
status = acpi_evaluate_integer(mem_device->handle, "_STA",
NULL, &current_status);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
/* Check for device status. Device should be disabled */
if (current_status & ACPI_MEMORY_STA_ENABLED)
return_VALUE(-EINVAL);
return -EINVAL;
return_VALUE(0);
return 0;
}
static int acpi_memory_disable_device(struct acpi_memory_device *mem_device)
@ -247,7 +242,6 @@ static int acpi_memory_disable_device(struct acpi_memory_device *mem_device)
u64 start = mem_device->start_addr;
u64 len = mem_device->length;
ACPI_FUNCTION_TRACE("acpi_memory_disable_device");
/*
* Ask the VM to offline this memory range.
@ -255,7 +249,7 @@ static int acpi_memory_disable_device(struct acpi_memory_device *mem_device)
*/
result = remove_memory(start, len);
if (result)
return_VALUE(result);
return result;
/* Power-off and eject the device */
result = acpi_memory_powerdown_device(mem_device);
@ -274,7 +268,6 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
struct acpi_memory_device *mem_device;
struct acpi_device *device;
ACPI_FUNCTION_TRACE("acpi_memory_device_notify");
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
@ -287,7 +280,7 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
"\nReceived DEVICE CHECK notification for device\n"));
if (acpi_memory_get_device(handle, &mem_device)) {
printk(KERN_ERR PREFIX "Cannot find driver data\n");
return_VOID;
return;
}
if (!acpi_memory_check_device(mem_device)) {
@ -329,7 +322,7 @@ static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static int acpi_memory_device_add(struct acpi_device *device)
@ -337,14 +330,13 @@ static int acpi_memory_device_add(struct acpi_device *device)
int result;
struct acpi_memory_device *mem_device = NULL;
ACPI_FUNCTION_TRACE("acpi_memory_device_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
mem_device = kmalloc(sizeof(struct acpi_memory_device), GFP_KERNEL);
if (!mem_device)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(mem_device, 0, sizeof(struct acpi_memory_device));
mem_device->handle = device->handle;
@ -356,7 +348,7 @@ static int acpi_memory_device_add(struct acpi_device *device)
result = acpi_memory_get_device_resources(mem_device);
if (result) {
kfree(mem_device);
return_VALUE(result);
return result;
}
/* Set the device state */
@ -364,22 +356,21 @@ static int acpi_memory_device_add(struct acpi_device *device)
printk(KERN_INFO "%s \n", acpi_device_name(device));
return_VALUE(result);
return result;
}
static int acpi_memory_device_remove(struct acpi_device *device, int type)
{
struct acpi_memory_device *mem_device = NULL;
ACPI_FUNCTION_TRACE("acpi_memory_device_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
mem_device = (struct acpi_memory_device *)acpi_driver_data(device);
kfree(mem_device);
return_VALUE(0);
return 0;
}
/*
@ -392,16 +383,15 @@ static acpi_status is_memory_device(acpi_handle handle)
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
struct acpi_device_info *info;
ACPI_FUNCTION_TRACE("is_memory_device");
status = acpi_get_object_info(handle, &buffer);
if (ACPI_FAILURE(status))
return_ACPI_STATUS(status);
return status;
info = buffer.pointer;
if (!(info->valid & ACPI_VALID_HID)) {
acpi_os_free(buffer.pointer);
return_ACPI_STATUS(AE_ERROR);
return AE_ERROR;
}
hardware_id = info->hardware_id.value;
@ -410,7 +400,7 @@ static acpi_status is_memory_device(acpi_handle handle)
status = AE_ERROR;
acpi_os_free(buffer.pointer);
return_ACPI_STATUS(status);
return status;
}
static acpi_status
@ -419,18 +409,17 @@ acpi_memory_register_notify_handler(acpi_handle handle,
{
acpi_status status;
ACPI_FUNCTION_TRACE("acpi_memory_register_notify_handler");
status = is_memory_device(handle);
if (ACPI_FAILURE(status)){
ACPI_EXCEPTION((AE_INFO, status, "handle is no memory device"));
return_ACPI_STATUS(AE_OK); /* continue */
return AE_OK; /* continue */
}
status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
acpi_memory_device_notify, NULL);
/* continue */
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
static acpi_status
@ -439,19 +428,18 @@ acpi_memory_deregister_notify_handler(acpi_handle handle,
{
acpi_status status;
ACPI_FUNCTION_TRACE("acpi_memory_deregister_notify_handler");
status = is_memory_device(handle);
if (ACPI_FAILURE(status)){
ACPI_EXCEPTION((AE_INFO, status, "handle is no memory device"));
return_ACPI_STATUS(AE_OK); /* continue */
return AE_OK; /* continue */
}
status = acpi_remove_notify_handler(handle,
ACPI_SYSTEM_NOTIFY,
acpi_memory_device_notify);
return_ACPI_STATUS(AE_OK); /* continue */
return AE_OK; /* continue */
}
static int __init acpi_memory_device_init(void)
@ -459,12 +447,11 @@ static int __init acpi_memory_device_init(void)
int result;
acpi_status status;
ACPI_FUNCTION_TRACE("acpi_memory_device_init");
result = acpi_bus_register_driver(&acpi_memory_device_driver);
if (result < 0)
return_VALUE(-ENODEV);
return -ENODEV;
status = acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
@ -474,17 +461,16 @@ static int __init acpi_memory_device_init(void)
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "walk_namespace failed"));
acpi_bus_unregister_driver(&acpi_memory_device_driver);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_memory_device_exit(void)
{
acpi_status status;
ACPI_FUNCTION_TRACE("acpi_memory_device_exit");
/*
* Adding this to un-install notification handlers for all the device
@ -500,7 +486,7 @@ static void __exit acpi_memory_device_exit(void)
acpi_bus_unregister_driver(&acpi_memory_device_driver);
return_VOID;
return;
}
module_init(acpi_memory_device_init);

97
drivers/acpi/battery.c
View File

@ -132,17 +132,16 @@ acpi_battery_get_info(struct acpi_battery *battery,
struct acpi_buffer data = { 0, NULL };
union acpi_object *package = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_get_info");
if (!battery || !bif)
return_VALUE(-EINVAL);
return -EINVAL;
/* Evalute _BIF */
status = acpi_evaluate_object(battery->handle, "_BIF", NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF"));
return_VALUE(-ENODEV);
return -ENODEV;
}
package = (union acpi_object *)buffer.pointer;
@ -177,7 +176,7 @@ acpi_battery_get_info(struct acpi_battery *battery,
if (!result)
(*bif) = (struct acpi_battery_info *)data.pointer;
return_VALUE(result);
return result;
}
static int
@ -193,17 +192,16 @@ acpi_battery_get_status(struct acpi_battery *battery,
struct acpi_buffer data = { 0, NULL };
union acpi_object *package = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_get_status");
if (!battery || !bst)
return_VALUE(-EINVAL);
return -EINVAL;
/* Evalute _BST */
status = acpi_evaluate_object(battery->handle, "_BST", NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST"));
return_VALUE(-ENODEV);
return -ENODEV;
}
package = (union acpi_object *)buffer.pointer;
@ -238,7 +236,7 @@ acpi_battery_get_status(struct acpi_battery *battery,
if (!result)
(*bst) = (struct acpi_battery_status *)data.pointer;
return_VALUE(result);
return result;
}
static int
@ -248,25 +246,24 @@ acpi_battery_set_alarm(struct acpi_battery *battery, unsigned long alarm)
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list arg_list = { 1, &arg0 };
ACPI_FUNCTION_TRACE("acpi_battery_set_alarm");
if (!battery)
return_VALUE(-EINVAL);
return -EINVAL;
if (!battery->flags.alarm)
return_VALUE(-ENODEV);
return -ENODEV;
arg0.integer.value = alarm;
status = acpi_evaluate_object(battery->handle, "_BTP", &arg_list, NULL);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", (u32) alarm));
battery->alarm = alarm;
return_VALUE(0);
return 0;
}
static int acpi_battery_check(struct acpi_battery *battery)
@ -277,18 +274,17 @@ static int acpi_battery_check(struct acpi_battery *battery)
struct acpi_device *device = NULL;
struct acpi_battery_info *bif = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_check");
if (!battery)
return_VALUE(-EINVAL);
return -EINVAL;
result = acpi_bus_get_device(battery->handle, &device);
if (result)
return_VALUE(result);
return result;
result = acpi_bus_get_status(device);
if (result)
return_VALUE(result);
return result;
/* Insertion? */
@ -300,7 +296,7 @@ static int acpi_battery_check(struct acpi_battery *battery)
result = acpi_battery_get_info(battery, &bif);
if (result)
return_VALUE(result);
return result;
battery->flags.power_unit = bif->power_unit;
battery->trips.warning = bif->design_capacity_warning;
@ -324,7 +320,7 @@ static int acpi_battery_check(struct acpi_battery *battery)
battery->flags.present = device->status.battery_present;
return_VALUE(result);
return result;
}
/* --------------------------------------------------------------------------
@ -339,7 +335,6 @@ static int acpi_battery_read_info(struct seq_file *seq, void *offset)
struct acpi_battery_info *bif = NULL;
char *units = "?";
ACPI_FUNCTION_TRACE("acpi_battery_read_info");
if (!battery)
goto end;
@ -409,7 +404,7 @@ static int acpi_battery_read_info(struct seq_file *seq, void *offset)
end:
kfree(bif);
return_VALUE(0);
return 0;
}
static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
@ -424,7 +419,6 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset)
struct acpi_battery_status *bst = NULL;
char *units = "?";
ACPI_FUNCTION_TRACE("acpi_battery_read_state");
if (!battery)
goto end;
@ -487,7 +481,7 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset)
end:
kfree(bst);
return_VALUE(0);
return 0;
}
static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
@ -500,7 +494,6 @@ static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
struct acpi_battery *battery = (struct acpi_battery *)seq->private;
char *units = "?";
ACPI_FUNCTION_TRACE("acpi_battery_read_alarm");
if (!battery)
goto end;
@ -525,7 +518,7 @@ static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
seq_printf(seq, "%d %sh\n", (u32) battery->alarm, units);
end:
return_VALUE(0);
return 0;
}
static ssize_t
@ -538,25 +531,24 @@ acpi_battery_write_alarm(struct file *file,
struct seq_file *m = (struct seq_file *)file->private_data;
struct acpi_battery *battery = (struct acpi_battery *)m->private;
ACPI_FUNCTION_TRACE("acpi_battery_write_alarm");
if (!battery || (count > sizeof(alarm_string) - 1))
return_VALUE(-EINVAL);
return -EINVAL;
if (!battery->flags.present)
return_VALUE(-ENODEV);
return -ENODEV;
if (copy_from_user(alarm_string, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
alarm_string[count] = '\0';
result = acpi_battery_set_alarm(battery,
simple_strtoul(alarm_string, NULL, 0));
if (result)
return_VALUE(result);
return result;
return_VALUE(count);
return count;
}
static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
@ -593,13 +585,12 @@ static int acpi_battery_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_battery_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
}
@ -607,7 +598,7 @@ static int acpi_battery_add_fs(struct acpi_device *device)
entry = create_proc_entry(ACPI_BATTERY_FILE_INFO,
S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_battery_info_ops;
entry->data = acpi_driver_data(device);
@ -618,7 +609,7 @@ static int acpi_battery_add_fs(struct acpi_device *device)
entry = create_proc_entry(ACPI_BATTERY_FILE_STATUS,
S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_battery_state_ops;
entry->data = acpi_driver_data(device);
@ -630,19 +621,18 @@ static int acpi_battery_add_fs(struct acpi_device *device)
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_battery_alarm_ops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_battery_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_battery_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_BATTERY_FILE_ALARM,
@ -656,7 +646,7 @@ static int acpi_battery_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
@ -668,13 +658,12 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
struct acpi_battery *battery = (struct acpi_battery *)data;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_notify");
if (!battery)
return_VOID;
return;
if (acpi_bus_get_device(handle, &device))
return_VOID;
return;
switch (event) {
case ACPI_BATTERY_NOTIFY_STATUS:
@ -688,7 +677,7 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static int acpi_battery_add(struct acpi_device *device)
@ -697,14 +686,13 @@ static int acpi_battery_add(struct acpi_device *device)
acpi_status status = 0;
struct acpi_battery *battery = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
battery = kmalloc(sizeof(struct acpi_battery), GFP_KERNEL);
if (!battery)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(battery, 0, sizeof(struct acpi_battery));
battery->handle = device->handle;
@ -738,7 +726,7 @@ static int acpi_battery_add(struct acpi_device *device)
kfree(battery);
}
return_VALUE(result);
return result;
}
static int acpi_battery_remove(struct acpi_device *device, int type)
@ -746,10 +734,9 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
acpi_status status = 0;
struct acpi_battery *battery = NULL;
ACPI_FUNCTION_TRACE("acpi_battery_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
battery = (struct acpi_battery *)acpi_driver_data(device);
@ -761,38 +748,36 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
kfree(battery);
return_VALUE(0);
return 0;
}
static int __init acpi_battery_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_battery_init");
acpi_battery_dir = proc_mkdir(ACPI_BATTERY_CLASS, acpi_root_dir);
if (!acpi_battery_dir)
return_VALUE(-ENODEV);
return -ENODEV;
acpi_battery_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_battery_driver);
if (result < 0) {
remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_battery_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_battery_exit");
acpi_bus_unregister_driver(&acpi_battery_driver);
remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_battery_init);

105
drivers/acpi/bus.c
View File

@ -60,20 +60,19 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE("acpi_bus_get_device");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
/* TBD: Support fixed-feature devices */
status = acpi_get_data(handle, acpi_bus_data_handler, (void **)device);
if (ACPI_FAILURE(status) || !*device) {
ACPI_EXCEPTION((AE_INFO, status, "No context for object [%p]", handle));
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_get_device);
@ -83,10 +82,9 @@ int acpi_bus_get_status(struct acpi_device *device)
acpi_status status = AE_OK;
unsigned long sta = 0;
ACPI_FUNCTION_TRACE("acpi_bus_get_status");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
/*
* Evaluate _STA if present.
@ -95,7 +93,7 @@ int acpi_bus_get_status(struct acpi_device *device)
status =
acpi_evaluate_integer(device->handle, "_STA", NULL, &sta);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
STRUCT_TO_INT(device->status) = (int)sta;
}
@ -119,7 +117,7 @@ int acpi_bus_get_status(struct acpi_device *device)
device->pnp.bus_id,
(u32) STRUCT_TO_INT(device->status)));
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_get_status);
@ -135,11 +133,10 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
struct acpi_device *device = NULL;
unsigned long psc = 0;
ACPI_FUNCTION_TRACE("acpi_bus_get_power");
result = acpi_bus_get_device(handle, &device);
if (result)
return_VALUE(result);
return result;
*state = ACPI_STATE_UNKNOWN;
@ -158,12 +155,12 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
status = acpi_evaluate_integer(device->handle, "_PSC",
NULL, &psc);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
device->power.state = (int)psc;
} else if (device->power.flags.power_resources) {
result = acpi_power_get_inferred_state(device);
if (result)
return_VALUE(result);
return result;
}
*state = device->power.state;
@ -172,7 +169,7 @@ int acpi_bus_get_power(acpi_handle handle, int *state)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] power state is D%d\n",
device->pnp.bus_id, device->power.state));
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_get_power);
@ -184,21 +181,20 @@ int acpi_bus_set_power(acpi_handle handle, int state)
struct acpi_device *device = NULL;
char object_name[5] = { '_', 'P', 'S', '0' + state, '\0' };
ACPI_FUNCTION_TRACE("acpi_bus_set_power");
result = acpi_bus_get_device(handle, &device);
if (result)
return_VALUE(result);
return result;
if ((state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
return_VALUE(-EINVAL);
return -EINVAL;
/* Make sure this is a valid target state */
if (!device->flags.power_manageable) {
printk(KERN_DEBUG "Device `[%s]is not power manageable",
device->kobj.name);
return_VALUE(-ENODEV);
return -ENODEV;
}
/*
* Get device's current power state if it's unknown
@ -210,18 +206,18 @@ int acpi_bus_set_power(acpi_handle handle, int state)
if (state == device->power.state) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n",
state));
return_VALUE(0);
return 0;
}
}
if (!device->power.states[state].flags.valid) {
printk(KERN_WARNING PREFIX "Device does not support D%d\n", state);
return_VALUE(-ENODEV);
return -ENODEV;
}
if (device->parent && (state < device->parent->power.state)) {
printk(KERN_WARNING PREFIX
"Cannot set device to a higher-powered"
" state than parent\n");
return_VALUE(-ENODEV);
return -ENODEV;
}
/*
@ -271,7 +267,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
"Device [%s] transitioned to D%d\n",
device->pnp.bus_id, state));
return_VALUE(result);
return result;
}
EXPORT_SYMBOL(acpi_bus_set_power);
@ -292,18 +288,17 @@ int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data)
struct acpi_bus_event *event = NULL;
unsigned long flags = 0;
ACPI_FUNCTION_TRACE("acpi_bus_generate_event");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
/* drop event on the floor if no one's listening */
if (!event_is_open)
return_VALUE(0);
return 0;
event = kmalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
if (!event)
return_VALUE(-ENOMEM);
return -ENOMEM;
strcpy(event->device_class, device->pnp.device_class);
strcpy(event->bus_id, device->pnp.bus_id);
@ -316,7 +311,7 @@ int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data)
wake_up_interruptible(&acpi_bus_event_queue);
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_generate_event);
@ -328,10 +323,9 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
DECLARE_WAITQUEUE(wait, current);
ACPI_FUNCTION_TRACE("acpi_bus_receive_event");
if (!event)
return_VALUE(-EINVAL);
return -EINVAL;
if (list_empty(&acpi_bus_event_list)) {
@ -345,7 +339,7 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
set_current_state(TASK_RUNNING);
if (signal_pending(current))
return_VALUE(-ERESTARTSYS);
return -ERESTARTSYS;
}
spin_lock_irqsave(&acpi_bus_event_lock, flags);
@ -356,13 +350,13 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
spin_unlock_irqrestore(&acpi_bus_event_lock, flags);
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
memcpy(event, entry, sizeof(struct acpi_bus_event));
kfree(entry);
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_receive_event);
@ -377,10 +371,9 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
acpi_status status = 0;
struct acpi_device_status old_status;
ACPI_FUNCTION_TRACE("acpi_bus_check_device");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
if (status_changed)
*status_changed = 0;
@ -397,15 +390,15 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
if (status_changed)
*status_changed = 1;
}
return_VALUE(0);
return 0;
}
status = acpi_bus_get_status(device);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
return_VALUE(0);
return 0;
if (status_changed)
*status_changed = 1;
@ -421,7 +414,7 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
/* TBD: Handle device removal */
}
return_VALUE(0);
return 0;
}
static int acpi_bus_check_scope(struct acpi_device *device)
@ -429,25 +422,24 @@ static int acpi_bus_check_scope(struct acpi_device *device)
int result = 0;
int status_changed = 0;
ACPI_FUNCTION_TRACE("acpi_bus_check_scope");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
/* Status Change? */
result = acpi_bus_check_device(device, &status_changed);
if (result)
return_VALUE(result);
return result;
if (!status_changed)
return_VALUE(0);
return 0;
/*
* TBD: Enumerate child devices within this device's scope and
* run acpi_bus_check_device()'s on them.
*/
return_VALUE(0);
return 0;
}
/**
@ -460,10 +452,9 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
int result = 0;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_bus_notify");
if (acpi_bus_get_device(handle, &device))
return_VOID;
return;
switch (type) {
@ -538,7 +529,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
break;
}
return_VOID;
return;
}
/* --------------------------------------------------------------------------
@ -552,7 +543,6 @@ static int __init acpi_bus_init_irq(void)
struct acpi_object_list arg_list = { 1, &arg };
char *message = NULL;
ACPI_FUNCTION_TRACE("acpi_bus_init_irq");
/*
* Let the system know what interrupt model we are using by
@ -571,7 +561,7 @@ static int __init acpi_bus_init_irq(void)
break;
default:
printk(KERN_WARNING PREFIX "Unknown interrupt routing model\n");
return_VALUE(-ENODEV);
return -ENODEV;
}
printk(KERN_INFO PREFIX "Using %s for interrupt routing\n", message);
@ -581,10 +571,10 @@ static int __init acpi_bus_init_irq(void)
status = acpi_evaluate_object(NULL, "\\_PIC", &arg_list, NULL);
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PIC"));
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
void __init acpi_early_init(void)
@ -592,10 +582,9 @@ void __init acpi_early_init(void)
acpi_status status = AE_OK;
struct acpi_buffer buffer = { sizeof(acpi_fadt), &acpi_fadt };
ACPI_FUNCTION_TRACE("acpi_early_init");
if (acpi_disabled)
return_VOID;
return;
printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
@ -655,11 +644,11 @@ void __init acpi_early_init(void)
goto error0;
}
return_VOID;
return;
error0:
disable_acpi();
return_VOID;
return;
}
static int __init acpi_bus_init(void)
@ -668,7 +657,6 @@ static int __init acpi_bus_init(void)
acpi_status status = AE_OK;
extern acpi_status acpi_os_initialize1(void);
ACPI_FUNCTION_TRACE("acpi_bus_init");
status = acpi_os_initialize1();
@ -730,12 +718,12 @@ static int __init acpi_bus_init(void)
*/
acpi_root_dir = proc_mkdir(ACPI_BUS_FILE_ROOT, NULL);
return_VALUE(0);
return 0;
/* Mimic structured exception handling */
error1:
acpi_terminate();
return_VALUE(-ENODEV);
return -ENODEV;
}
decl_subsys(acpi, NULL, NULL);
@ -744,11 +732,10 @@ static int __init acpi_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_init");
if (acpi_disabled) {
printk(KERN_INFO PREFIX "Interpreter disabled.\n");
return_VALUE(-ENODEV);
return -ENODEV;
}
firmware_register(&acpi_subsys);
@ -769,7 +756,7 @@ static int __init acpi_init(void)
} else
disable_acpi();
return_VALUE(result);
return result;
}
subsys_initcall(acpi_init);

56
drivers/acpi/button.c
View File

@ -112,15 +112,14 @@ static int acpi_button_info_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_button *button = (struct acpi_button *)seq->private;
ACPI_FUNCTION_TRACE("acpi_button_info_seq_show");
if (!button || !button->device)
return_VALUE(0);
return 0;
seq_printf(seq, "type: %s\n",
acpi_device_name(button->device));
return_VALUE(0);
return 0;
}
static int acpi_button_info_open_fs(struct inode *inode, struct file *file)
@ -134,10 +133,9 @@ static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
acpi_status status;
unsigned long state;
ACPI_FUNCTION_TRACE("acpi_button_state_seq_show");
if (!button || !button->device)
return_VALUE(0);
return 0;
status = acpi_evaluate_integer(button->handle, "_LID", NULL, &state);
if (ACPI_FAILURE(status)) {
@ -147,7 +145,7 @@ static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
(state ? "open" : "closed"));
}
return_VALUE(0);
return 0;
}
static int acpi_button_state_open_fs(struct inode *inode, struct file *file)
@ -164,10 +162,9 @@ static int acpi_button_add_fs(struct acpi_device *device)
struct proc_dir_entry *entry = NULL;
struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_add_fs");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
button = acpi_driver_data(device);
@ -195,19 +192,19 @@ static int acpi_button_add_fs(struct acpi_device *device)
}
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
entry->owner = THIS_MODULE;
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), entry);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
/* 'info' [R] */
entry = create_proc_entry(ACPI_BUTTON_FILE_INFO,
S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_button_info_fops;
entry->data = acpi_driver_data(device);
@ -227,14 +224,13 @@ static int acpi_button_add_fs(struct acpi_device *device)
}
}
return_VALUE(0);
return 0;
}
static int acpi_button_remove_fs(struct acpi_device *device)
{
struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_remove_fs");
button = acpi_driver_data(device);
if (acpi_device_dir(device)) {
@ -249,7 +245,7 @@ static int acpi_button_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
@ -260,10 +256,9 @@ static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
{
struct acpi_button *button = (struct acpi_button *)data;
ACPI_FUNCTION_TRACE("acpi_button_notify");
if (!button || !button->device)
return_VOID;
return;
switch (event) {
case ACPI_BUTTON_NOTIFY_STATUS:
@ -276,21 +271,20 @@ static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static acpi_status acpi_button_notify_fixed(void *data)
{
struct acpi_button *button = (struct acpi_button *)data;
ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");
if (!button)
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
static int acpi_button_add(struct acpi_device *device)
@ -299,14 +293,13 @@ static int acpi_button_add(struct acpi_device *device)
acpi_status status = AE_OK;
struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
button = kmalloc(sizeof(struct acpi_button), GFP_KERNEL);
if (!button)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(button, 0, sizeof(struct acpi_button));
button->device = device;
@ -400,7 +393,7 @@ static int acpi_button_add(struct acpi_device *device)
kfree(button);
}
return_VALUE(result);
return result;
}
static int acpi_button_remove(struct acpi_device *device, int type)
@ -408,10 +401,9 @@ static int acpi_button_remove(struct acpi_device *device, int type)
acpi_status status = 0;
struct acpi_button *button = NULL;
ACPI_FUNCTION_TRACE("acpi_button_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
button = acpi_driver_data(device);
@ -438,31 +430,29 @@ static int acpi_button_remove(struct acpi_device *device, int type)
kfree(button);
return_VALUE(0);
return 0;
}
static int __init acpi_button_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_button_init");
acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
if (!acpi_button_dir)
return_VALUE(-ENODEV);
return -ENODEV;
acpi_button_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_button_driver);
if (result < 0) {
remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_button_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_button_exit");
acpi_bus_unregister_driver(&acpi_button_driver);
@ -474,7 +464,7 @@ static void __exit acpi_button_exit(void)
remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, acpi_button_dir);
remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_button_init);

34
drivers/acpi/container.c
View File

@ -73,17 +73,16 @@ static int is_device_present(acpi_handle handle)
acpi_status status;
unsigned long sta;
ACPI_FUNCTION_TRACE("is_device_present");
status = acpi_get_handle(handle, "_STA", &temp);
if (ACPI_FAILURE(status))
return_VALUE(1); /* _STA not found, assmue device present */
return 1; /* _STA not found, assmue device present */
status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
if (ACPI_FAILURE(status))
return_VALUE(0); /* Firmware error */
return 0; /* Firmware error */
return_VALUE((sta & ACPI_STA_PRESENT) == ACPI_STA_PRESENT);
return ((sta & ACPI_STA_PRESENT) == ACPI_STA_PRESENT);
}
/*******************************************************************/
@ -91,16 +90,15 @@ static int acpi_container_add(struct acpi_device *device)
{
struct acpi_container *container;
ACPI_FUNCTION_TRACE("acpi_container_add");
if (!device) {
printk(KERN_ERR PREFIX "device is NULL\n");
return_VALUE(-EINVAL);
return -EINVAL;
}
container = kmalloc(sizeof(struct acpi_container), GFP_KERNEL);
if (!container)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(container, 0, sizeof(struct acpi_container));
container->handle = device->handle;
@ -111,7 +109,7 @@ static int acpi_container_add(struct acpi_device *device)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device <%s> bid <%s>\n",
acpi_device_name(device), acpi_device_bid(device)));
return_VALUE(0);
return 0;
}
static int acpi_container_remove(struct acpi_device *device, int type)
@ -130,23 +128,22 @@ static int container_device_add(struct acpi_device **device, acpi_handle handle)
struct acpi_device *pdev;
int result;
ACPI_FUNCTION_TRACE("container_device_add");
if (acpi_get_parent(handle, &phandle)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
if (acpi_bus_get_device(phandle, &pdev)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
if (acpi_bus_add(device, pdev, handle, ACPI_BUS_TYPE_DEVICE)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
result = acpi_bus_start(*device);
return_VALUE(result);
return result;
}
static void container_notify_cb(acpi_handle handle, u32 type, void *context)
@ -156,7 +153,6 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
int present;
acpi_status status;
ACPI_FUNCTION_TRACE("container_notify_cb");
present = is_device_present(handle);
@ -192,7 +188,7 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
default:
break;
}
return_VOID;
return;
}
static acpi_status
@ -205,11 +201,10 @@ container_walk_namespace_cb(acpi_handle handle,
acpi_status status;
int *action = context;
ACPI_FUNCTION_TRACE("container_walk_namespace_cb");
status = acpi_get_object_info(handle, &buffer);
if (ACPI_FAILURE(status) || !buffer.pointer) {
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
info = buffer.pointer;
@ -243,7 +238,7 @@ container_walk_namespace_cb(acpi_handle handle,
end:
acpi_os_free(buffer.pointer);
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
static int __init acpi_container_init(void)
@ -269,7 +264,6 @@ static void __exit acpi_container_exit(void)
{
int action = UNINSTALL_NOTIFY_HANDLER;
ACPI_FUNCTION_TRACE("acpi_container_exit");
acpi_walk_namespace(ACPI_TYPE_DEVICE,
ACPI_ROOT_OBJECT,
@ -278,7 +272,7 @@ static void __exit acpi_container_exit(void)
acpi_bus_unregister_driver(&acpi_container_driver);
return_VOID;
return;
}
module_init(acpi_container_init);

14
drivers/acpi/debug.c
View File

@ -155,13 +155,12 @@ acpi_system_write_debug(struct file *file,
{
char debug_string[12] = { '\0' };
ACPI_FUNCTION_TRACE("acpi_system_write_debug");
if (count > sizeof(debug_string) - 1)
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(debug_string, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
debug_string[count] = '\0';
@ -173,10 +172,10 @@ acpi_system_write_debug(struct file *file,
acpi_dbg_level = simple_strtoul(debug_string, NULL, 0);
break;
default:
return_VALUE(-EINVAL);
return -EINVAL;
}
return_VALUE(count);
return count;
}
static int __init acpi_debug_init(void)
@ -185,10 +184,9 @@ static int __init acpi_debug_init(void)
int error = 0;
char *name;
ACPI_FUNCTION_TRACE("acpi_debug_init");
if (acpi_disabled)
return_VALUE(0);
return 0;
/* 'debug_layer' [R/W] */
name = ACPI_SYSTEM_FILE_DEBUG_LAYER;
@ -213,7 +211,7 @@ static int __init acpi_debug_init(void)
goto Error;
Done:
return_VALUE(error);
return error;
Error:
remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LEVEL, acpi_root_dir);

146
drivers/acpi/ec.c
View File

@ -207,7 +207,6 @@ static int acpi_ec_intr_wait(union acpi_ec *ec, unsigned int event)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_ec_wait");
ec->intr.expect_event = event;
smp_mb();
@ -216,7 +215,7 @@ static int acpi_ec_intr_wait(union acpi_ec *ec, unsigned int event)
case ACPI_EC_EVENT_IBE:
if (~acpi_ec_read_status(ec) & event) {
ec->intr.expect_event = 0;
return_VALUE(0);
return 0;
}
break;
default:
@ -238,16 +237,16 @@ static int acpi_ec_intr_wait(union acpi_ec *ec, unsigned int event)
switch (event) {
case ACPI_EC_EVENT_OBF:
if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_OBF)
return_VALUE(0);
return 0;
break;
case ACPI_EC_EVENT_IBE:
if (~acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF)
return_VALUE(0);
return 0;
break;
}
return_VALUE(-ETIME);
return -ETIME;
}
#ifdef ACPI_FUTURE_USAGE
@ -260,7 +259,6 @@ int acpi_ec_enter_burst_mode(union acpi_ec *ec)
u32 tmp = 0;
int status = 0;
ACPI_FUNCTION_TRACE("acpi_ec_enter_burst_mode");
status = acpi_ec_read_status(ec);
if (status != -EINVAL && !(status & ACPI_EC_FLAG_BURST)) {
@ -272,22 +270,21 @@ int acpi_ec_enter_burst_mode(union acpi_ec *ec)
status = acpi_ec_wait(ec, ACPI_EC_EVENT_OBF);
acpi_hw_low_level_read(8, &tmp, &ec->common.data_addr);
if (tmp != 0x90) { /* Burst ACK byte */
return_VALUE(-EINVAL);
return -EINVAL;
}
}
atomic_set(&ec->intr.leaving_burst, 0);
return_VALUE(0);
return 0;
end:
ACPI_EXCEPTION ((AE_INFO, status, "EC wait, burst mode");
return_VALUE(-1);
return -1;
}
int acpi_ec_leave_burst_mode(union acpi_ec *ec)
{
int status = 0;
ACPI_FUNCTION_TRACE("acpi_ec_leave_burst_mode");
status = acpi_ec_read_status(ec);
if (status != -EINVAL && (status & ACPI_EC_FLAG_BURST)){
@ -298,10 +295,10 @@ int acpi_ec_leave_burst_mode(union acpi_ec *ec)
acpi_ec_wait(ec, ACPI_EC_FLAG_IBF);
}
atomic_set(&ec->intr.leaving_burst, 1);
return_VALUE(0);
return 0;
end:
ACPI_EXCEPTION((AE_INFO, status, "EC leave burst mode");
return_VALUE(-1);
return -1;
}
#endif /* ACPI_FUTURE_USAGE */
@ -325,17 +322,16 @@ static int acpi_ec_poll_read(union acpi_ec *ec, u8 address, u32 * data)
int result = 0;
u32 glk = 0;
ACPI_FUNCTION_TRACE("acpi_ec_read");
if (!ec || !data)
return_VALUE(-EINVAL);
return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
if (down_interruptible(&ec->poll.sem)) {
@ -365,7 +361,7 @@ end_nosem:
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(result);
return result;
}
static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
@ -374,15 +370,14 @@ static int acpi_ec_poll_write(union acpi_ec *ec, u8 address, u8 data)
acpi_status status = AE_OK;
u32 glk = 0;
ACPI_FUNCTION_TRACE("acpi_ec_write");
if (!ec)
return_VALUE(-EINVAL);
return -EINVAL;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
if (down_interruptible(&ec->poll.sem)) {
@ -415,7 +410,7 @@ end_nosem:
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(result);
return result;
}
static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data)
@ -423,17 +418,16 @@ static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data)
int status = 0;
u32 glk;
ACPI_FUNCTION_TRACE("acpi_ec_read");
if (!ec || !data)
return_VALUE(-EINVAL);
return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
WARN_ON(in_interrupt());
@ -467,7 +461,7 @@ static int acpi_ec_intr_read(union acpi_ec *ec, u8 address, u32 * data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(status);
return status;
}
static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data)
@ -475,15 +469,14 @@ static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data)
int status = 0;
u32 glk;
ACPI_FUNCTION_TRACE("acpi_ec_write");
if (!ec)
return_VALUE(-EINVAL);
return -EINVAL;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
WARN_ON(in_interrupt());
@ -516,7 +509,7 @@ static int acpi_ec_intr_write(union acpi_ec *ec, u8 address, u8 data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(status);
return status;
}
/*
@ -574,17 +567,16 @@ static int acpi_ec_poll_query(union acpi_ec *ec, u32 * data)
acpi_status status = AE_OK;
u32 glk = 0;
ACPI_FUNCTION_TRACE("acpi_ec_query");
if (!ec || !data)
return_VALUE(-EINVAL);
return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
/*
@ -613,23 +605,22 @@ end_nosem:
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(result);
return result;
}
static int acpi_ec_intr_query(union acpi_ec *ec, u32 * data)
{
int status = 0;
u32 glk;
ACPI_FUNCTION_TRACE("acpi_ec_query");
if (!ec || !data)
return_VALUE(-EINVAL);
return -EINVAL;
*data = 0;
if (ec->common.global_lock) {
status = acpi_acquire_global_lock(ACPI_EC_UDELAY_GLK, &glk);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
}
down(&ec->intr.sem);
@ -662,7 +653,7 @@ static int acpi_ec_intr_query(union acpi_ec *ec, u32 * data)
if (ec->common.global_lock)
acpi_release_global_lock(glk);
return_VALUE(status);
return status;
}
/* --------------------------------------------------------------------------
@ -691,13 +682,12 @@ static void acpi_ec_gpe_poll_query(void *ec_cxt)
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
ACPI_FUNCTION_TRACE("acpi_ec_gpe_query");
if (!ec_cxt)
goto end;
if (down_interruptible (&ec->poll.sem)) {
return_VOID;
return;
}
acpi_hw_low_level_read(8, &value, &ec->common.command_addr);
up(&ec->poll.sem);
@ -734,7 +724,6 @@ static void acpi_ec_gpe_intr_query(void *ec_cxt)
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
ACPI_FUNCTION_TRACE("acpi_ec_gpe_query");
if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_SCI)
result = acpi_ec_query(ec, &value);
@ -846,15 +835,14 @@ acpi_ec_space_handler(u32 function,
acpi_integer f_v = 0;
int i = 0;
ACPI_FUNCTION_TRACE("acpi_ec_space_handler");
if ((address > 0xFF) || !value || !handler_context)
return_VALUE(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
if (bit_width != 8 && acpi_strict) {
printk(KERN_WARNING PREFIX
"acpi_ec_space_handler: bit_width should be 8\n");
return_VALUE(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
}
ec = (union acpi_ec *)handler_context;
@ -893,16 +881,16 @@ acpi_ec_space_handler(u32 function,
out:
switch (result) {
case -EINVAL:
return_VALUE(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
break;
case -ENODEV:
return_VALUE(AE_NOT_FOUND);
return AE_NOT_FOUND;
break;
case -ETIME:
return_VALUE(AE_TIME);
return AE_TIME;
break;
default:
return_VALUE(AE_OK);
return AE_OK;
}
}
@ -916,7 +904,6 @@ static int acpi_ec_read_info(struct seq_file *seq, void *offset)
{
union acpi_ec *ec = (union acpi_ec *)seq->private;
ACPI_FUNCTION_TRACE("acpi_ec_read_info");
if (!ec)
goto end;
@ -931,7 +918,7 @@ static int acpi_ec_read_info(struct seq_file *seq, void *offset)
acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
end:
return_VALUE(0);
return 0;
}
static int acpi_ec_info_open_fs(struct inode *inode, struct file *file)
@ -951,31 +938,29 @@ static int acpi_ec_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_ec_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
}
entry = create_proc_entry(ACPI_EC_FILE_INFO, S_IRUGO,
acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_ec_info_ops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_ec_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_ec_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_EC_FILE_INFO, acpi_device_dir(device));
@ -983,7 +968,7 @@ static int acpi_ec_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
@ -996,14 +981,13 @@ static int acpi_ec_poll_add(struct acpi_device *device)
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ec = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(ec, 0, sizeof(union acpi_ec));
ec->common.handle = device->handle;
@ -1056,7 +1040,7 @@ static int acpi_ec_poll_add(struct acpi_device *device)
if (result)
kfree(ec);
return_VALUE(result);
return result;
}
static int acpi_ec_intr_add(struct acpi_device *device)
{
@ -1064,14 +1048,13 @@ static int acpi_ec_intr_add(struct acpi_device *device)
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ec = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(ec, 0, sizeof(union acpi_ec));
ec->common.handle = device->handle;
@ -1127,17 +1110,16 @@ static int acpi_ec_intr_add(struct acpi_device *device)
if (result)
kfree(ec);
return_VALUE(result);
return result;
}
static int acpi_ec_remove(struct acpi_device *device, int type)
{
union acpi_ec *ec = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_remove");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ec = acpi_driver_data(device);
@ -1145,7 +1127,7 @@ static int acpi_ec_remove(struct acpi_device *device, int type)
kfree(ec);
return_VALUE(0);
return 0;
}
static acpi_status
@ -1184,15 +1166,14 @@ static int acpi_ec_start(struct acpi_device *device)
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_start");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ec = acpi_driver_data(device);
if (!ec)
return_VALUE(-EINVAL);
return -EINVAL;
/*
* Get I/O port addresses. Convert to GAS format.
@ -1202,7 +1183,7 @@ static int acpi_ec_start(struct acpi_device *device)
if (ACPI_FAILURE(status)
|| ec->common.command_addr.register_bit_width == 0) {
printk(KERN_ERR PREFIX "Error getting I/O port addresses\n");
return_VALUE(-ENODEV);
return -ENODEV;
}
ec->common.status_addr = ec->common.command_addr;
@ -1219,7 +1200,7 @@ static int acpi_ec_start(struct acpi_device *device)
ACPI_GPE_EDGE_TRIGGERED,
&acpi_ec_gpe_handler, ec);
if (ACPI_FAILURE(status)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
acpi_set_gpe_type(NULL, ec->common.gpe_bit, ACPI_GPE_TYPE_RUNTIME);
acpi_enable_gpe(NULL, ec->common.gpe_bit, ACPI_NOT_ISR);
@ -1231,10 +1212,10 @@ static int acpi_ec_start(struct acpi_device *device)
if (ACPI_FAILURE(status)) {
acpi_remove_gpe_handler(NULL, ec->common.gpe_bit,
&acpi_ec_gpe_handler);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(AE_OK);
return AE_OK;
}
static int acpi_ec_stop(struct acpi_device *device, int type)
@ -1242,10 +1223,9 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
acpi_status status = AE_OK;
union acpi_ec *ec = NULL;
ACPI_FUNCTION_TRACE("acpi_ec_stop");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
ec = acpi_driver_data(device);
@ -1253,15 +1233,15 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
ACPI_ADR_SPACE_EC,
&acpi_ec_space_handler);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
status =
acpi_remove_gpe_handler(NULL, ec->common.gpe_bit,
&acpi_ec_gpe_handler);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
return_VALUE(0);
return 0;
}
static acpi_status __init
@ -1531,23 +1511,22 @@ static int __init acpi_ec_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_ec_init");
if (acpi_disabled)
return_VALUE(0);
return 0;
acpi_ec_dir = proc_mkdir(ACPI_EC_CLASS, acpi_root_dir);
if (!acpi_ec_dir)
return_VALUE(-ENODEV);
return -ENODEV;
/* Now register the driver for the EC */
result = acpi_bus_register_driver(&acpi_ec_driver);
if (result < 0) {
remove_proc_entry(ACPI_EC_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(result);
return result;
}
subsys_initcall(acpi_ec_init);
@ -1556,13 +1535,12 @@ subsys_initcall(acpi_ec_init);
#if 0
static void __exit acpi_ec_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_ec_exit");
acpi_bus_unregister_driver(&acpi_ec_driver);
remove_proc_entry(ACPI_EC_CLASS, acpi_root_dir);
return_VOID;
return;
}
#endif /* 0 */

14
drivers/acpi/event.c
View File

@ -48,18 +48,17 @@ acpi_system_read_event(struct file *file, char __user * buffer, size_t count,
static int chars_remaining = 0;
static char *ptr;
ACPI_FUNCTION_TRACE("acpi_system_read_event");
if (!chars_remaining) {
memset(&event, 0, sizeof(struct acpi_bus_event));
if ((file->f_flags & O_NONBLOCK)
&& (list_empty(&acpi_bus_event_list)))
return_VALUE(-EAGAIN);
return -EAGAIN;
result = acpi_bus_receive_event(&event);
if (result)
return_VALUE(result);
return result;
chars_remaining = sprintf(str, "%s %s %08x %08x\n",
event.device_class ? event.
@ -75,13 +74,13 @@ acpi_system_read_event(struct file *file, char __user * buffer, size_t count,
}
if (copy_to_user(buffer, ptr, count))
return_VALUE(-EFAULT);
return -EFAULT;
*ppos += count;
chars_remaining -= count;
ptr += count;
return_VALUE(count);
return count;
}
static int acpi_system_close_event(struct inode *inode, struct file *file)
@ -112,10 +111,9 @@ static int __init acpi_event_init(void)
struct proc_dir_entry *entry;
int error = 0;
ACPI_FUNCTION_TRACE("acpi_event_init");
if (acpi_disabled)
return_VALUE(0);
return 0;
/* 'event' [R] */
entry = create_proc_entry("event", S_IRUSR, acpi_root_dir);
@ -124,7 +122,7 @@ static int __init acpi_event_init(void)
else {
error = -ENODEV;
}
return_VALUE(error);
return error;
}
subsys_initcall(acpi_event_init);

46
drivers/acpi/fan.c
View File

@ -78,7 +78,6 @@ static int acpi_fan_read_state(struct seq_file *seq, void *offset)
struct acpi_fan *fan = seq->private;
int state = 0;
ACPI_FUNCTION_TRACE("acpi_fan_read_state");
if (fan) {
if (acpi_bus_get_power(fan->handle, &state))
@ -87,7 +86,7 @@ static int acpi_fan_read_state(struct seq_file *seq, void *offset)
seq_printf(seq, "status: %s\n",
!state ? "on" : "off");
}
return_VALUE(0);
return 0;
}
static int acpi_fan_state_open_fs(struct inode *inode, struct file *file)
@ -104,22 +103,21 @@ acpi_fan_write_state(struct file *file, const char __user * buffer,
struct acpi_fan *fan = (struct acpi_fan *)m->private;
char state_string[12] = { '\0' };
ACPI_FUNCTION_TRACE("acpi_fan_write_state");
if (!fan || (count > sizeof(state_string) - 1))
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(state_string, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
state_string[count] = '\0';
result = acpi_bus_set_power(fan->handle,
simple_strtoul(state_string, NULL, 0));
if (result)
return_VALUE(result);
return result;
return_VALUE(count);
return count;
}
static struct file_operations acpi_fan_state_ops = {
@ -135,16 +133,15 @@ static int acpi_fan_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_fan_add_fs");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_fan_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
}
@ -153,19 +150,18 @@ static int acpi_fan_add_fs(struct acpi_device *device)
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_fan_state_ops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_fan_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_fan_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_FAN_FILE_STATE, acpi_device_dir(device));
@ -173,7 +169,7 @@ static int acpi_fan_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
@ -186,14 +182,13 @@ static int acpi_fan_add(struct acpi_device *device)
struct acpi_fan *fan = NULL;
int state = 0;
ACPI_FUNCTION_TRACE("acpi_fan_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
fan = kmalloc(sizeof(struct acpi_fan), GFP_KERNEL);
if (!fan)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(fan, 0, sizeof(struct acpi_fan));
fan->handle = device->handle;
@ -223,17 +218,16 @@ static int acpi_fan_add(struct acpi_device *device)
if (result)
kfree(fan);
return_VALUE(result);
return result;
}
static int acpi_fan_remove(struct acpi_device *device, int type)
{
struct acpi_fan *fan = NULL;
ACPI_FUNCTION_TRACE("acpi_fan_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
fan = (struct acpi_fan *)acpi_driver_data(device);
@ -241,7 +235,7 @@ static int acpi_fan_remove(struct acpi_device *device, int type)
kfree(fan);
return_VALUE(0);
return 0;
}
static int acpi_fan_suspend(struct acpi_device *device, int state)
@ -280,31 +274,29 @@ static int __init acpi_fan_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_fan_init");
acpi_fan_dir = proc_mkdir(ACPI_FAN_CLASS, acpi_root_dir);
if (!acpi_fan_dir)
return_VALUE(-ENODEV);
return -ENODEV;
acpi_fan_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_fan_driver);
if (result < 0) {
remove_proc_entry(ACPI_FAN_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_fan_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_fan_exit");
acpi_bus_unregister_driver(&acpi_fan_driver);
remove_proc_entry(ACPI_FAN_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_fan_init);

94
drivers/acpi/hotkey.c
View File

@ -231,11 +231,10 @@ struct list_head hotkey_entries; /* head of the list of hotkey_list */
static int hotkey_info_seq_show(struct seq_file *seq, void *offset)
{
ACPI_FUNCTION_TRACE("hotkey_info_seq_show");
seq_printf(seq, "Hotkey generic driver ver: %s\n", HOTKEY_ACPI_VERSION);
return_VALUE(0);
return 0;
}
static int hotkey_info_open_fs(struct inode *inode, struct file *file)
@ -266,7 +265,6 @@ static int hotkey_polling_seq_show(struct seq_file *seq, void *offset)
(struct acpi_polling_hotkey *)seq->private;
char *buf;
ACPI_FUNCTION_TRACE("hotkey_polling_seq_show");
if (poll_hotkey->poll_result) {
buf = format_result(poll_hotkey->poll_result);
@ -274,7 +272,7 @@ static int hotkey_polling_seq_show(struct seq_file *seq, void *offset)
seq_printf(seq, "%s", buf);
kfree(buf);
}
return_VALUE(0);
return 0;
}
static int hotkey_polling_open_fs(struct inode *inode, struct file *file)
@ -293,7 +291,6 @@ static int hotkey_get_internal_event(int event, struct acpi_hotkey_list *list)
struct list_head *entries;
int val = -1;
ACPI_FUNCTION_TRACE("hotkey_get_internal_event");
list_for_each(entries, list->entries) {
union acpi_hotkey *key =
@ -305,7 +302,7 @@ static int hotkey_get_internal_event(int event, struct acpi_hotkey_list *list)
}
}
return_VALUE(val);
return val;
}
static void
@ -314,15 +311,14 @@ acpi_hotkey_notify_handler(acpi_handle handle, u32 event, void *data)
struct acpi_device *device = NULL;
u32 internal_event;
ACPI_FUNCTION_TRACE("acpi_hotkey_notify_handler");
if (acpi_bus_get_device(handle, &device))
return_VOID;
return;
internal_event = hotkey_get_internal_event(event, &global_hotkey_list);
acpi_bus_generate_event(device, internal_event, 0);
return_VOID;
return;
}
/* Need to invent automatically hotkey add method */
@ -346,7 +342,6 @@ static int create_polling_proc(union acpi_hotkey *device)
char proc_name[80];
mode_t mode;
ACPI_FUNCTION_TRACE("create_polling_proc");
mode = S_IFREG | S_IRUGO | S_IWUGO;
sprintf(proc_name, "%d", device->link.hotkey_standard_num);
@ -356,7 +351,7 @@ static int create_polling_proc(union acpi_hotkey *device)
proc = create_proc_entry(proc_name, mode, hotkey_proc_dir);
if (!proc) {
return_VALUE(-ENODEV);
return -ENODEV;
} else {
proc->proc_fops = &hotkey_polling_fops;
proc->owner = THIS_MODULE;
@ -365,7 +360,7 @@ static int create_polling_proc(union acpi_hotkey *device)
proc->gid = 0;
device->poll_hotkey.proc = proc;
}
return_VALUE(0);
return 0;
}
static int hotkey_add(union acpi_hotkey *device)
@ -373,7 +368,6 @@ static int hotkey_add(union acpi_hotkey *device)
int status = 0;
struct acpi_device *dev = NULL;
ACPI_FUNCTION_TRACE("hotkey_add");
if (device->link.hotkey_type == ACPI_HOTKEY_EVENT) {
acpi_bus_get_device(device->event_hotkey.bus_handle, &dev);
@ -388,14 +382,13 @@ static int hotkey_add(union acpi_hotkey *device)
list_add_tail(&device->link.entries, global_hotkey_list.entries);
return_VALUE(status);
return status;
}
static int hotkey_remove(union acpi_hotkey *device)
{
struct list_head *entries, *next;
ACPI_FUNCTION_TRACE("hotkey_remove");
list_for_each_safe(entries, next, global_hotkey_list.entries) {
union acpi_hotkey *key =
@ -409,14 +402,13 @@ static int hotkey_remove(union acpi_hotkey *device)
}
}
kfree(device);
return_VALUE(0);
return 0;
}
static int hotkey_update(union acpi_hotkey *key)
{
struct list_head *entries;
ACPI_FUNCTION_TRACE("hotkey_update");
list_for_each(entries, global_hotkey_list.entries) {
union acpi_hotkey *tmp =
@ -458,19 +450,18 @@ static int hotkey_update(union acpi_hotkey *key)
*/
kfree(key);
}
return_VALUE(0);
return 0;
break;
}
}
return_VALUE(-ENODEV);
return -ENODEV;
}
static void free_hotkey_device(union acpi_hotkey *key)
{
struct acpi_device *dev;
ACPI_FUNCTION_TRACE("free_hotkey_device");
if (key->link.hotkey_type == ACPI_HOTKEY_EVENT) {
acpi_bus_get_device(key->event_hotkey.bus_handle, &dev);
@ -490,7 +481,7 @@ static void free_hotkey_device(union acpi_hotkey *key)
free_poll_hotkey_buffer(key);
}
kfree(key);
return_VOID;
return;
}
static void free_hotkey_buffer(union acpi_hotkey *key)
@ -511,7 +502,6 @@ init_hotkey_device(union acpi_hotkey *key, char *bus_str, char *action_str,
acpi_handle tmp_handle;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE("init_hotkey_device");
if (std_num < 0 || IS_POLL(std_num) || !key)
goto do_fail;
@ -538,9 +528,9 @@ init_hotkey_device(union acpi_hotkey *key, char *bus_str, char *action_str,
method, &tmp_handle);
if (ACPI_FAILURE(status))
goto do_fail;
return_VALUE(AE_OK);
return AE_OK;
do_fail:
return_VALUE(-ENODEV);
return -ENODEV;
}
static int
@ -552,7 +542,6 @@ init_poll_hotkey_device(union acpi_hotkey *key,
acpi_status status = AE_OK;
acpi_handle tmp_handle;
ACPI_FUNCTION_TRACE("init_poll_hotkey_device");
if (std_num < 0 || IS_EVENT(std_num) || !key)
goto do_fail;
@ -587,22 +576,20 @@ init_poll_hotkey_device(union acpi_hotkey *key,
(union acpi_object *)kmalloc(sizeof(union acpi_object), GFP_KERNEL);
if (!key->poll_hotkey.poll_result)
goto do_fail;
return_VALUE(AE_OK);
return AE_OK;
do_fail:
return_VALUE(-ENODEV);
return -ENODEV;
}
static int hotkey_open_config(struct inode *inode, struct file *file)
{
ACPI_FUNCTION_TRACE("hotkey_open_config");
return_VALUE(single_open
return (single_open
(file, hotkey_config_seq_show, PDE(inode)->data));
}
static int hotkey_poll_open_config(struct inode *inode, struct file *file)
{
ACPI_FUNCTION_TRACE("hotkey_poll_open_config");
return_VALUE(single_open
return (single_open
(file, hotkey_poll_config_seq_show, PDE(inode)->data));
}
@ -615,7 +602,6 @@ static int hotkey_config_seq_show(struct seq_file *seq, void *offset)
struct acpi_buffer bus = { ACPI_PATHNAME_MAX, bus_name };
struct acpi_buffer act = { ACPI_PATHNAME_MAX, action_name };
ACPI_FUNCTION_TRACE(("hotkey_config_seq_show"));
list_for_each(entries, hotkey_list->entries) {
union acpi_hotkey *key =
@ -633,7 +619,7 @@ static int hotkey_config_seq_show(struct seq_file *seq, void *offset)
}
}
seq_puts(seq, "\n");
return_VALUE(0);
return 0;
}
static int hotkey_poll_config_seq_show(struct seq_file *seq, void *offset)
@ -645,7 +631,6 @@ static int hotkey_poll_config_seq_show(struct seq_file *seq, void *offset)
struct acpi_buffer bus = { ACPI_PATHNAME_MAX, bus_name };
struct acpi_buffer act = { ACPI_PATHNAME_MAX, action_name };
ACPI_FUNCTION_TRACE(("hotkey_config_seq_show"));
list_for_each(entries, hotkey_list->entries) {
union acpi_hotkey *key =
@ -663,7 +648,7 @@ static int hotkey_poll_config_seq_show(struct seq_file *seq, void *offset)
}
}
seq_puts(seq, "\n");
return_VALUE(0);
return 0;
}
static int
@ -675,7 +660,6 @@ get_parms(char *config_record,
char **method, int *internal_event_num, int *external_event_num)
{
char *tmp, *tmp1, count;
ACPI_FUNCTION_TRACE(("get_parms"));
sscanf(config_record, "%d", cmd);
@ -741,9 +725,9 @@ get_parms(char *config_record,
0)
goto do_fail;
return_VALUE(6);
return 6;
do_fail:
return_VALUE(-1);
return -1;
}
/* count is length for one input record */
@ -760,16 +744,15 @@ static ssize_t hotkey_write_config(struct file *file,
int ret = 0;
union acpi_hotkey *key = NULL;
ACPI_FUNCTION_TRACE(("hotkey_write_config"));
config_record = (char *)kmalloc(count + 1, GFP_KERNEL);
if (!config_record)
return_VALUE(-ENOMEM);
return -ENOMEM;
if (copy_from_user(config_record, buffer, count)) {
kfree(config_record);
printk(KERN_ERR PREFIX "Invalid data\n");
return_VALUE(-EINVAL);
return -EINVAL;
}
config_record[count] = 0;
@ -790,7 +773,7 @@ static ssize_t hotkey_write_config(struct file *file,
kfree(action_handle);
kfree(method);
printk(KERN_ERR PREFIX "Invalid data format ret=%d\n", ret);
return_VALUE(-EINVAL);
return -EINVAL;
}
key = kmalloc(sizeof(union acpi_hotkey), GFP_KERNEL);
@ -825,7 +808,7 @@ static ssize_t hotkey_write_config(struct file *file,
free_poll_hotkey_buffer(key);
kfree(key);
printk(KERN_ERR PREFIX "Invalid hotkey\n");
return_VALUE(-EINVAL);
return -EINVAL;
}
cont_cmd:
@ -851,7 +834,7 @@ static ssize_t hotkey_write_config(struct file *file,
goto fail_out;
break;
}
return_VALUE(count);
return count;
fail_out:
if (IS_EVENT(internal_event_num))
free_hotkey_buffer(key);
@ -859,7 +842,7 @@ static ssize_t hotkey_write_config(struct file *file,
free_poll_hotkey_buffer(key);
kfree(key);
printk(KERN_ERR PREFIX "invalid key\n");
return_VALUE(-EINVAL);
return -EINVAL;
}
/*
@ -876,7 +859,6 @@ static int write_acpi_int(acpi_handle handle, const char *method, int val,
union acpi_object in_obj; /* the only param we use */
acpi_status status;
ACPI_FUNCTION_TRACE("write_acpi_int");
params.count = 1;
params.pointer = &in_obj;
in_obj.type = ACPI_TYPE_INTEGER;
@ -884,7 +866,7 @@ static int write_acpi_int(acpi_handle handle, const char *method, int val,
status = acpi_evaluate_object(handle, (char *)method, &params, output);
return_VALUE(status == AE_OK);
return (status == AE_OK);
}
static int read_acpi_int(acpi_handle handle, const char *method,
@ -894,7 +876,6 @@ static int read_acpi_int(acpi_handle handle, const char *method,
union acpi_object out_obj;
acpi_status status;
ACPI_FUNCTION_TRACE("read_acpi_int");
output.length = sizeof(out_obj);
output.pointer = &out_obj;
@ -904,7 +885,7 @@ static int read_acpi_int(acpi_handle handle, const char *method,
val->type = out_obj.type;
} else
printk(KERN_ERR PREFIX "null val pointer\n");
return_VALUE((status == AE_OK)
return ((status == AE_OK)
&& (out_obj.type == ACPI_TYPE_INTEGER));
}
@ -941,24 +922,23 @@ static ssize_t hotkey_execute_aml_method(struct file *file,
int event, method_type, type, value;
union acpi_hotkey *key;
ACPI_FUNCTION_TRACE("hotkey_execte_aml_method");
arg = (char *)kmalloc(count + 1, GFP_KERNEL);
if (!arg)
return_VALUE(-ENOMEM);
return -ENOMEM;
arg[count] = 0;
if (copy_from_user(arg, buffer, count)) {
kfree(arg);
printk(KERN_ERR PREFIX "Invalid argument 2\n");
return_VALUE(-EINVAL);
return -EINVAL;
}
if (sscanf(arg, "%d:%d:%d:%d", &event, &method_type, &type, &value) !=
4) {
kfree(arg);
printk(KERN_ERR PREFIX "Invalid argument 3\n");
return_VALUE(-EINVAL);
return -EINVAL;
}
kfree(arg);
if (type == ACPI_TYPE_INTEGER) {
@ -984,11 +964,11 @@ static ssize_t hotkey_execute_aml_method(struct file *file,
}
} else {
printk(KERN_WARNING "Not supported\n");
return_VALUE(-EINVAL);
return -EINVAL;
}
return_VALUE(count);
return count;
do_fail:
return_VALUE(-EINVAL);
return -EINVAL;
}
@ -997,7 +977,6 @@ static int __init hotkey_init(void)
int result;
mode_t mode = S_IFREG | S_IRUGO | S_IWUGO;
ACPI_FUNCTION_TRACE("hotkey_init");
if (acpi_disabled)
return -ENODEV;
@ -1084,7 +1063,6 @@ static void __exit hotkey_exit(void)
{
struct list_head *entries, *next;
ACPI_FUNCTION_TRACE("hotkey_exit");
list_for_each_safe(entries, next, global_hotkey_list.entries) {
union acpi_hotkey *key =

5
drivers/acpi/motherboard.c
View File

@ -52,13 +52,12 @@ static acpi_status acpi_reserve_io_ranges(struct acpi_resource *res, void *data)
{
struct resource *requested_res = NULL;
ACPI_FUNCTION_TRACE("acpi_reserve_io_ranges");
if (res->type == ACPI_RESOURCE_TYPE_IO) {
struct acpi_resource_io *io_res = &res->data.io;
if (io_res->minimum != io_res->maximum)
return_VALUE(AE_OK);
return AE_OK;
if (IS_RESERVED_ADDR
(io_res->minimum, io_res->address_length)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@ -92,7 +91,7 @@ static acpi_status acpi_reserve_io_ranges(struct acpi_resource *res, void *data)
if (requested_res)
requested_res->flags &= ~IORESOURCE_BUSY;
return_VALUE(AE_OK);
return AE_OK;
}
static int acpi_motherboard_add(struct acpi_device *device)

35
drivers/acpi/osl.c
View File

@ -587,19 +587,18 @@ static void acpi_os_execute_deferred(void *context)
{
struct acpi_os_dpc *dpc = NULL;
ACPI_FUNCTION_TRACE("os_execute_deferred");
dpc = (struct acpi_os_dpc *)context;
if (!dpc) {
printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
return_VOID;
return;
}
dpc->function(dpc->context);
kfree(dpc);
return_VOID;
return;
}
static int acpi_os_execute_thread(void *context)
@ -693,7 +692,6 @@ acpi_status acpi_os_create_lock(acpi_handle * out_handle)
{
spinlock_t *lock_ptr;
ACPI_FUNCTION_TRACE("os_create_lock");
lock_ptr = acpi_os_allocate(sizeof(spinlock_t));
@ -703,7 +701,7 @@ acpi_status acpi_os_create_lock(acpi_handle * out_handle)
*out_handle = lock_ptr;
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
/*
@ -711,13 +709,12 @@ acpi_status acpi_os_create_lock(acpi_handle * out_handle)
*/
void acpi_os_delete_lock(acpi_handle handle)
{
ACPI_FUNCTION_TRACE("os_create_lock");
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting spinlock[%p].\n", handle));
acpi_os_free(handle);
return_VOID;
return;
}
acpi_status
@ -725,11 +722,10 @@ acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle)
{
struct semaphore *sem = NULL;
ACPI_FUNCTION_TRACE("os_create_semaphore");
sem = acpi_os_allocate(sizeof(struct semaphore));
if (!sem)
return_ACPI_STATUS(AE_NO_MEMORY);
return AE_NO_MEMORY;
memset(sem, 0, sizeof(struct semaphore));
sema_init(sem, initial_units);
@ -739,7 +735,7 @@ acpi_os_create_semaphore(u32 max_units, u32 initial_units, acpi_handle * handle)
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Creating semaphore[%p|%d].\n",
*handle, initial_units));
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
EXPORT_SYMBOL(acpi_os_create_semaphore);
@ -755,17 +751,16 @@ acpi_status acpi_os_delete_semaphore(acpi_handle handle)
{
struct semaphore *sem = (struct semaphore *)handle;
ACPI_FUNCTION_TRACE("os_delete_semaphore");
if (!sem)
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Deleting semaphore[%p].\n", handle));
acpi_os_free(sem);
sem = NULL;
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
EXPORT_SYMBOL(acpi_os_delete_semaphore);
@ -785,13 +780,12 @@ acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout)
struct semaphore *sem = (struct semaphore *)handle;
int ret = 0;
ACPI_FUNCTION_TRACE("os_wait_semaphore");
if (!sem || (units < 1))
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
if (units > 1)
return_ACPI_STATUS(AE_SUPPORT);
return AE_SUPPORT;
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Waiting for semaphore[%p|%d|%d]\n",
handle, units, timeout));
@ -850,7 +844,7 @@ acpi_status acpi_os_wait_semaphore(acpi_handle handle, u32 units, u16 timeout)
units, timeout));
}
return_ACPI_STATUS(status);
return status;
}
EXPORT_SYMBOL(acpi_os_wait_semaphore);
@ -862,20 +856,19 @@ acpi_status acpi_os_signal_semaphore(acpi_handle handle, u32 units)
{
struct semaphore *sem = (struct semaphore *)handle;
ACPI_FUNCTION_TRACE("os_signal_semaphore");
if (!sem || (units < 1))
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
if (units > 1)
return_ACPI_STATUS(AE_SUPPORT);
return AE_SUPPORT;
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Signaling semaphore[%p|%d]\n", handle,
units));
up(sem);
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
EXPORT_SYMBOL(acpi_os_signal_semaphore);

37
drivers/acpi/pci_bind.c
View File

@ -47,11 +47,10 @@ struct acpi_pci_data {
static void acpi_pci_data_handler(acpi_handle handle, u32 function,
void *context)
{
ACPI_FUNCTION_TRACE("acpi_pci_data_handler");
/* TBD: Anything we need to do here? */
return_VOID;
return;
}
/**
@ -68,17 +67,16 @@ acpi_status acpi_get_pci_id(acpi_handle handle, struct acpi_pci_id *id)
struct acpi_device *device = NULL;
struct acpi_pci_data *data = NULL;
ACPI_FUNCTION_TRACE("acpi_get_pci_id");
if (!id)
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
result = acpi_bus_get_device(handle, &device);
if (result) {
printk(KERN_ERR PREFIX
"Invalid ACPI Bus context for device %s\n",
acpi_device_bid(device));
return_ACPI_STATUS(AE_NOT_EXIST);
return AE_NOT_EXIST;
}
status = acpi_get_data(handle, acpi_pci_data_handler, (void **)&data);
@ -86,7 +84,7 @@ acpi_status acpi_get_pci_id(acpi_handle handle, struct acpi_pci_id *id)
ACPI_EXCEPTION((AE_INFO, status,
"Invalid ACPI-PCI context for device %s",
acpi_device_bid(device)));
return_ACPI_STATUS(status);
return status;
}
*id = data->id;
@ -103,7 +101,7 @@ acpi_status acpi_get_pci_id(acpi_handle handle, struct acpi_pci_id *id)
acpi_device_bid(device), id->segment, id->bus,
id->device, id->function));
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
EXPORT_SYMBOL(acpi_get_pci_id);
@ -120,14 +118,13 @@ int acpi_pci_bind(struct acpi_device *device)
struct pci_dev *dev;
struct pci_bus *bus;
ACPI_FUNCTION_TRACE("acpi_pci_bind");
if (!device || !device->parent)
return_VALUE(-EINVAL);
return -EINVAL;
pathname = kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
if (!pathname)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(pathname, 0, ACPI_PATHNAME_MAX);
buffer.length = ACPI_PATHNAME_MAX;
buffer.pointer = pathname;
@ -135,7 +132,7 @@ int acpi_pci_bind(struct acpi_device *device)
data = kmalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
if (!data) {
kfree(pathname);
return_VALUE(-ENOMEM);
return -ENOMEM;
}
memset(data, 0, sizeof(struct acpi_pci_data));
@ -269,7 +266,7 @@ int acpi_pci_bind(struct acpi_device *device)
if (result)
kfree(data);
return_VALUE(result);
return result;
}
int acpi_pci_unbind(struct acpi_device *device)
@ -280,14 +277,13 @@ int acpi_pci_unbind(struct acpi_device *device)
char *pathname = NULL;
struct acpi_buffer buffer = { 0, NULL };
ACPI_FUNCTION_TRACE("acpi_pci_unbind");
if (!device || !device->parent)
return_VALUE(-EINVAL);
return -EINVAL;
pathname = (char *)kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
if (!pathname)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(pathname, 0, ACPI_PATHNAME_MAX);
buffer.length = ACPI_PATHNAME_MAX;
@ -322,7 +318,7 @@ int acpi_pci_unbind(struct acpi_device *device)
kfree(data);
end:
return_VALUE(result);
return result;
}
int
@ -335,11 +331,10 @@ acpi_pci_bind_root(struct acpi_device *device,
char *pathname = NULL;
struct acpi_buffer buffer = { 0, NULL };
ACPI_FUNCTION_TRACE("acpi_pci_bind_root");
pathname = (char *)kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
if (!pathname)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(pathname, 0, ACPI_PATHNAME_MAX);
buffer.length = ACPI_PATHNAME_MAX;
@ -347,13 +342,13 @@ acpi_pci_bind_root(struct acpi_device *device,
if (!device || !id || !bus) {
kfree(pathname);
return_VALUE(-EINVAL);
return -EINVAL;
}
data = kmalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
if (!data) {
kfree(pathname);
return_VALUE(-ENOMEM);
return -ENOMEM;
}
memset(data, 0, sizeof(struct acpi_pci_data));
@ -381,5 +376,5 @@ acpi_pci_bind_root(struct acpi_device *device,
if (result != 0)
kfree(data);
return_VALUE(result);
return result;
}

71
drivers/acpi/pci_irq.c
View File

@ -55,10 +55,9 @@ static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(int segment,
struct list_head *node = NULL;
struct acpi_prt_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_pci_irq_find_prt_entry");
if (!acpi_prt.count)
return_PTR(NULL);
return NULL;
/*
* Parse through all PRT entries looking for a match on the specified
@ -73,12 +72,12 @@ static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(int segment,
&& (device == entry->id.device)
&& (pin == entry->pin)) {
spin_unlock(&acpi_prt_lock);
return_PTR(entry);
return entry;
}
}
spin_unlock(&acpi_prt_lock);
return_PTR(NULL);
return NULL;
}
static int
@ -87,14 +86,13 @@ acpi_pci_irq_add_entry(acpi_handle handle,
{
struct acpi_prt_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_pci_irq_add_entry");
if (!prt)
return_VALUE(-EINVAL);
return -EINVAL;
entry = kmalloc(sizeof(struct acpi_prt_entry), GFP_KERNEL);
if (!entry)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(entry, 0, sizeof(struct acpi_prt_entry));
entry->id.segment = segment;
@ -141,7 +139,7 @@ acpi_pci_irq_add_entry(acpi_handle handle,
acpi_prt.count++;
spin_unlock(&acpi_prt_lock);
return_VALUE(0);
return 0;
}
static void
@ -163,11 +161,10 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
struct acpi_pci_routing_table *entry = NULL;
static int first_time = 1;
ACPI_FUNCTION_TRACE("acpi_pci_irq_add_prt");
pathname = (char *)kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
if (!pathname)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(pathname, 0, ACPI_PATHNAME_MAX);
if (first_time) {
@ -199,12 +196,12 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
if (status != AE_BUFFER_OVERFLOW) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRT [%s]",
acpi_format_exception(status)));
return_VALUE(-ENODEV);
return -ENODEV;
}
prt = kmalloc(buffer.length, GFP_KERNEL);
if (!prt) {
return_VALUE(-ENOMEM);
return -ENOMEM;
}
memset(prt, 0, buffer.length);
buffer.pointer = prt;
@ -214,7 +211,7 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRT [%s]",
acpi_format_exception(status)));
kfree(buffer.pointer);
return_VALUE(-ENODEV);
return -ENODEV;
}
entry = prt;
@ -227,7 +224,7 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
kfree(prt);
return_VALUE(0);
return 0;
}
void acpi_pci_irq_del_prt(int segment, int bus)
@ -262,7 +259,6 @@ acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
{
int irq;
ACPI_FUNCTION_TRACE("acpi_pci_allocate_irq");
if (entry->link.handle) {
irq = acpi_pci_link_allocate_irq(entry->link.handle,
@ -271,7 +267,7 @@ acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
if (irq < 0) {
printk(KERN_WARNING PREFIX
"Invalid IRQ link routing entry\n");
return_VALUE(-1);
return -1;
}
} else {
irq = entry->link.index;
@ -280,7 +276,7 @@ acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found IRQ %d\n", irq));
return_VALUE(irq);
return irq;
}
static int
@ -289,13 +285,12 @@ acpi_pci_free_irq(struct acpi_prt_entry *entry,
{
int irq;
ACPI_FUNCTION_TRACE("acpi_pci_free_irq");
if (entry->link.handle) {
irq = acpi_pci_link_free_irq(entry->link.handle);
} else {
irq = entry->link.index;
}
return_VALUE(irq);
return irq;
}
/*
@ -315,7 +310,6 @@ acpi_pci_irq_lookup(struct pci_bus *bus,
int bus_nr = bus->number;
int ret;
ACPI_FUNCTION_TRACE("acpi_pci_irq_lookup");
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Searching for PRT entry for %02x:%02x:%02x[%c]\n",
@ -324,11 +318,11 @@ acpi_pci_irq_lookup(struct pci_bus *bus,
entry = acpi_pci_irq_find_prt_entry(segment, bus_nr, device, pin);
if (!entry) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "PRT entry not found\n"));
return_VALUE(-1);
return -1;
}
ret = func(entry, triggering, polarity, link);
return_VALUE(ret);
return ret;
}
/*
@ -346,10 +340,9 @@ acpi_pci_irq_derive(struct pci_dev *dev,
int irq = -1;
u8 bridge_pin = 0;
ACPI_FUNCTION_TRACE("acpi_pci_irq_derive");
if (!dev)
return_VALUE(-EINVAL);
return -EINVAL;
/*
* Attempt to derive an IRQ for this device from a parent bridge's
@ -366,7 +359,7 @@ acpi_pci_irq_derive(struct pci_dev *dev,
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No interrupt pin configured for device %s\n",
pci_name(bridge)));
return_VALUE(-1);
return -1;
}
/* Pin is from 0 to 3 */
bridge_pin--;
@ -381,13 +374,13 @@ acpi_pci_irq_derive(struct pci_dev *dev,
if (irq < 0) {
printk(KERN_WARNING PREFIX "Unable to derive IRQ for device %s\n",
pci_name(dev));
return_VALUE(-1);
return -1;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Derive IRQ %d for device %s from %s\n",
irq, pci_name(dev), pci_name(bridge)));
return_VALUE(irq);
return irq;
}
/*
@ -405,23 +398,22 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
char *link = NULL;
int rc;
ACPI_FUNCTION_TRACE("acpi_pci_irq_enable");
if (!dev)
return_VALUE(-EINVAL);
return -EINVAL;
pin = dev->pin;
if (!pin) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No interrupt pin configured for device %s\n",
pci_name(dev)));
return_VALUE(0);
return 0;
}
pin--;
if (!dev->bus) {
printk(KERN_ERR PREFIX "Invalid (NULL) 'bus' field\n");
return_VALUE(-ENODEV);
return -ENODEV;
}
/*
@ -453,10 +445,10 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
printk(" - using IRQ %d\n", dev->irq);
acpi_register_gsi(dev->irq, ACPI_LEVEL_SENSITIVE,
ACPI_ACTIVE_LOW);
return_VALUE(0);
return 0;
} else {
printk("\n");
return_VALUE(0);
return 0;
}
}
@ -464,7 +456,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
if (rc < 0) {
printk(KERN_WARNING PREFIX "PCI Interrupt %s[%c]: failed "
"to register GSI\n", pci_name(dev), ('A' + pin));
return_VALUE(rc);
return rc;
}
dev->irq = rc;
@ -478,7 +470,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
(triggering == ACPI_LEVEL_SENSITIVE) ? "level" : "edge",
(polarity == ACPI_ACTIVE_LOW) ? "low" : "high", dev->irq);
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_pci_irq_enable);
@ -495,14 +487,13 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
int triggering = ACPI_LEVEL_SENSITIVE;
int polarity = ACPI_ACTIVE_LOW;
ACPI_FUNCTION_TRACE("acpi_pci_irq_disable");
if (!dev || !dev->bus)
return_VOID;
return;
pin = dev->pin;
if (!pin)
return_VOID;
return;
pin--;
/*
@ -520,7 +511,7 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
&triggering, &polarity, NULL,
acpi_pci_free_irq);
if (gsi < 0)
return_VOID;
return;
/*
* TBD: It might be worth clearing dev->irq by magic constant
@ -532,5 +523,5 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
acpi_unregister_gsi(gsi);
return_VOID;
return;
}

105
drivers/acpi/pci_link.c
View File

@ -107,17 +107,16 @@ acpi_pci_link_check_possible(struct acpi_resource *resource, void *context)
struct acpi_pci_link *link = (struct acpi_pci_link *)context;
u32 i = 0;
ACPI_FUNCTION_TRACE("acpi_pci_link_check_possible");
switch (resource->type) {
case ACPI_RESOURCE_TYPE_START_DEPENDENT:
return_ACPI_STATUS(AE_OK);
return AE_OK;
case ACPI_RESOURCE_TYPE_IRQ:
{
struct acpi_resource_irq *p = &resource->data.irq;
if (!p || !p->interrupt_count) {
printk(KERN_WARNING PREFIX "Blank IRQ resource\n");
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
for (i = 0;
(i < p->interrupt_count
@ -142,7 +141,7 @@ acpi_pci_link_check_possible(struct acpi_resource *resource, void *context)
if (!p || !p->interrupt_count) {
printk(KERN_WARNING PREFIX
"Blank EXT IRQ resource\n");
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
for (i = 0;
(i < p->interrupt_count
@ -162,33 +161,32 @@ acpi_pci_link_check_possible(struct acpi_resource *resource, void *context)
}
default:
printk(KERN_ERR PREFIX "Resource is not an IRQ entry\n");
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
return_ACPI_STATUS(AE_CTRL_TERMINATE);
return AE_CTRL_TERMINATE;
}
static int acpi_pci_link_get_possible(struct acpi_pci_link *link)
{
acpi_status status;
ACPI_FUNCTION_TRACE("acpi_pci_link_get_possible");
if (!link)
return_VALUE(-EINVAL);
return -EINVAL;
status = acpi_walk_resources(link->handle, METHOD_NAME__PRS,
acpi_pci_link_check_possible, link);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRS"));
return_VALUE(-ENODEV);
return -ENODEV;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Found %d possible IRQs\n",
link->irq.possible_count));
return_VALUE(0);
return 0;
}
static acpi_status
@ -196,7 +194,6 @@ acpi_pci_link_check_current(struct acpi_resource *resource, void *context)
{
int *irq = (int *)context;
ACPI_FUNCTION_TRACE("acpi_pci_link_check_current");
switch (resource->type) {
case ACPI_RESOURCE_TYPE_IRQ:
@ -209,7 +206,7 @@ acpi_pci_link_check_current(struct acpi_resource *resource, void *context)
*/
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Blank IRQ resource\n"));
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
*irq = p->interrupts[0];
break;
@ -225,7 +222,7 @@ acpi_pci_link_check_current(struct acpi_resource *resource, void *context)
*/
printk(KERN_WARNING PREFIX
"Blank EXT IRQ resource\n");
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
*irq = p->interrupts[0];
break;
@ -234,9 +231,9 @@ acpi_pci_link_check_current(struct acpi_resource *resource, void *context)
default:
printk(KERN_ERR PREFIX "Resource %d isn't an IRQ\n", resource->type);
case ACPI_RESOURCE_TYPE_END_TAG:
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
return_ACPI_STATUS(AE_CTRL_TERMINATE);
return AE_CTRL_TERMINATE;
}
/*
@ -252,10 +249,9 @@ static int acpi_pci_link_get_current(struct acpi_pci_link *link)
acpi_status status = AE_OK;
int irq = 0;
ACPI_FUNCTION_TRACE("acpi_pci_link_get_current");
if (!link || !link->handle)
return_VALUE(-EINVAL);
return -EINVAL;
link->irq.active = 0;
@ -270,7 +266,7 @@ static int acpi_pci_link_get_current(struct acpi_pci_link *link)
if (!link->device->status.enabled) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Link disabled\n"));
return_VALUE(0);
return 0;
}
}
@ -296,7 +292,7 @@ static int acpi_pci_link_get_current(struct acpi_pci_link *link)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Link at IRQ %d \n", link->irq.active));
end:
return_VALUE(result);
return result;
}
static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
@ -309,14 +305,13 @@ static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
} *resource;
struct acpi_buffer buffer = { 0, NULL };
ACPI_FUNCTION_TRACE("acpi_pci_link_set");
if (!link || !irq)
return_VALUE(-EINVAL);
return -EINVAL;
resource = kmalloc(sizeof(*resource) + 1, GFP_ATOMIC);
if (!resource)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(resource, 0, sizeof(*resource) + 1);
buffer.length = sizeof(*resource) + 1;
@ -413,7 +408,7 @@ static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
end:
kfree(resource);
return_VALUE(result);
return result;
}
/* --------------------------------------------------------------------------
@ -487,7 +482,6 @@ int __init acpi_irq_penalty_init(void)
struct acpi_pci_link *link = NULL;
int i = 0;
ACPI_FUNCTION_TRACE("acpi_irq_penalty_init");
/*
* Update penalties to facilitate IRQ balancing.
@ -524,7 +518,7 @@ int __init acpi_irq_penalty_init(void)
/* Add a penalty for the SCI */
acpi_irq_penalty[acpi_fadt.sci_int] += PIRQ_PENALTY_PCI_USING;
return_VALUE(0);
return 0;
}
static int acpi_irq_balance; /* 0: static, 1: balance */
@ -534,13 +528,12 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
int irq;
int i;
ACPI_FUNCTION_TRACE("acpi_pci_link_allocate");
if (link->irq.initialized) {
if (link->refcnt == 0)
/* This means the link is disabled but initialized */
acpi_pci_link_set(link, link->irq.active);
return_VALUE(0);
return 0;
}
/*
@ -587,7 +580,7 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
"Try pci=noacpi or acpi=off\n",
acpi_device_name(link->device),
acpi_device_bid(link->device));
return_VALUE(-ENODEV);
return -ENODEV;
} else {
acpi_irq_penalty[link->irq.active] += PIRQ_PENALTY_PCI_USING;
printk(PREFIX "%s [%s] enabled at IRQ %d\n",
@ -597,7 +590,7 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
link->irq.initialized = 1;
return_VALUE(0);
return 0;
}
/*
@ -615,36 +608,35 @@ acpi_pci_link_allocate_irq(acpi_handle handle,
struct acpi_device *device = NULL;
struct acpi_pci_link *link = NULL;
ACPI_FUNCTION_TRACE("acpi_pci_link_allocate_irq");
result = acpi_bus_get_device(handle, &device);
if (result) {
printk(KERN_ERR PREFIX "Invalid link device\n");
return_VALUE(-1);
return -1;
}
link = (struct acpi_pci_link *)acpi_driver_data(device);
if (!link) {
printk(KERN_ERR PREFIX "Invalid link context\n");
return_VALUE(-1);
return -1;
}
/* TBD: Support multiple index (IRQ) entries per Link Device */
if (index) {
printk(KERN_ERR PREFIX "Invalid index %d\n", index);
return_VALUE(-1);
return -1;
}
mutex_lock(&acpi_link_lock);
if (acpi_pci_link_allocate(link)) {
mutex_unlock(&acpi_link_lock);
return_VALUE(-1);
return -1;
}
if (!link->irq.active) {
mutex_unlock(&acpi_link_lock);
printk(KERN_ERR PREFIX "Link active IRQ is 0!\n");
return_VALUE(-1);
return -1;
}
link->refcnt++;
mutex_unlock(&acpi_link_lock);
@ -658,7 +650,7 @@ acpi_pci_link_allocate_irq(acpi_handle handle,
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Link %s is referenced\n",
acpi_device_bid(link->device)));
return_VALUE(link->irq.active);
return (link->irq.active);
}
/*
@ -671,25 +663,24 @@ int acpi_pci_link_free_irq(acpi_handle handle)
struct acpi_pci_link *link = NULL;
acpi_status result;
ACPI_FUNCTION_TRACE("acpi_pci_link_free_irq");
result = acpi_bus_get_device(handle, &device);
if (result) {
printk(KERN_ERR PREFIX "Invalid link device\n");
return_VALUE(-1);
return -1;
}
link = (struct acpi_pci_link *)acpi_driver_data(device);
if (!link) {
printk(KERN_ERR PREFIX "Invalid link context\n");
return_VALUE(-1);
return -1;
}
mutex_lock(&acpi_link_lock);
if (!link->irq.initialized) {
mutex_unlock(&acpi_link_lock);
printk(KERN_ERR PREFIX "Link isn't initialized\n");
return_VALUE(-1);
return -1;
}
#ifdef FUTURE_USE
/*
@ -711,7 +702,7 @@ int acpi_pci_link_free_irq(acpi_handle handle)
acpi_ut_evaluate_object(link->handle, "_DIS", 0, NULL);
}
mutex_unlock(&acpi_link_lock);
return_VALUE(link->irq.active);
return (link->irq.active);
}
/* --------------------------------------------------------------------------
@ -725,14 +716,13 @@ static int acpi_pci_link_add(struct acpi_device *device)
int i = 0;
int found = 0;
ACPI_FUNCTION_TRACE("acpi_pci_link_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
link = kmalloc(sizeof(struct acpi_pci_link), GFP_KERNEL);
if (!link)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(link, 0, sizeof(struct acpi_pci_link));
link->device = device;
@ -781,17 +771,16 @@ static int acpi_pci_link_add(struct acpi_device *device)
if (result)
kfree(link);
return_VALUE(result);
return result;
}
static int acpi_pci_link_resume(struct acpi_pci_link *link)
{
ACPI_FUNCTION_TRACE("acpi_pci_link_resume");
if (link->refcnt && link->irq.active && link->irq.initialized)
return_VALUE(acpi_pci_link_set(link, link->irq.active));
return (acpi_pci_link_set(link, link->irq.active));
else
return_VALUE(0);
return 0;
}
/*
@ -804,7 +793,6 @@ static int irqrouter_resume(struct sys_device *dev)
struct list_head *node = NULL;
struct acpi_pci_link *link = NULL;
ACPI_FUNCTION_TRACE("irqrouter_resume");
/* Make sure SCI is enabled again (Apple firmware bug?) */
acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1, ACPI_MTX_DO_NOT_LOCK);
@ -819,17 +807,16 @@ static int irqrouter_resume(struct sys_device *dev)
acpi_pci_link_resume(link);
}
acpi_in_resume = 0;
return_VALUE(0);
return 0;
}
static int acpi_pci_link_remove(struct acpi_device *device, int type)
{
struct acpi_pci_link *link = NULL;
ACPI_FUNCTION_TRACE("acpi_pci_link_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
link = (struct acpi_pci_link *)acpi_driver_data(device);
@ -839,7 +826,7 @@ static int acpi_pci_link_remove(struct acpi_device *device, int type)
kfree(link);
return_VALUE(0);
return 0;
}
/*
@ -945,34 +932,32 @@ static int __init irqrouter_init_sysfs(void)
{
int error;
ACPI_FUNCTION_TRACE("irqrouter_init_sysfs");
if (acpi_disabled || acpi_noirq)
return_VALUE(0);
return 0;
error = sysdev_class_register(&irqrouter_sysdev_class);
if (!error)
error = sysdev_register(&device_irqrouter);
return_VALUE(error);
return error;
}
device_initcall(irqrouter_init_sysfs);
static int __init acpi_pci_link_init(void)
{
ACPI_FUNCTION_TRACE("acpi_pci_link_init");
if (acpi_noirq)
return_VALUE(0);
return 0;
acpi_link.count = 0;
INIT_LIST_HEAD(&acpi_link.entries);
if (acpi_bus_register_driver(&acpi_pci_link_driver) < 0)
return_VALUE(-ENODEV);
return -ENODEV;
return_VALUE(0);
return 0;
}
subsys_initcall(acpi_pci_link_init);

24
drivers/acpi/pci_root.c
View File

@ -160,14 +160,13 @@ static int acpi_pci_root_add(struct acpi_device *device)
unsigned long value = 0;
acpi_handle handle = NULL;
ACPI_FUNCTION_TRACE("acpi_pci_root_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
root = kmalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
if (!root)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(root, 0, sizeof(struct acpi_pci_root));
INIT_LIST_HEAD(&root->node);
@ -307,46 +306,43 @@ static int acpi_pci_root_add(struct acpi_device *device)
kfree(root);
}
return_VALUE(result);
return result;
}
static int acpi_pci_root_start(struct acpi_device *device)
{
struct acpi_pci_root *root;
ACPI_FUNCTION_TRACE("acpi_pci_root_start");
list_for_each_entry(root, &acpi_pci_roots, node) {
if (root->handle == device->handle) {
pci_bus_add_devices(root->bus);
return_VALUE(0);
return 0;
}
}
return_VALUE(-ENODEV);
return -ENODEV;
}
static int acpi_pci_root_remove(struct acpi_device *device, int type)
{
struct acpi_pci_root *root = NULL;
ACPI_FUNCTION_TRACE("acpi_pci_root_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
root = (struct acpi_pci_root *)acpi_driver_data(device);
kfree(root);
return_VALUE(0);
return 0;
}
static int __init acpi_pci_root_init(void)
{
ACPI_FUNCTION_TRACE("acpi_pci_root_init");
if (acpi_pci_disabled)
return_VALUE(0);
return 0;
/* DEBUG:
acpi_dbg_layer = ACPI_PCI_COMPONENT;
@ -354,9 +350,9 @@ static int __init acpi_pci_root_init(void)
*/
if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0)
return_VALUE(-ENODEV);
return -ENODEV;
return_VALUE(0);
return 0;
}
subsys_initcall(acpi_pci_root_init);

125
drivers/acpi/power.c
View File

@ -98,22 +98,21 @@ acpi_power_get_context(acpi_handle handle,
int result = 0;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_power_get_context");
if (!resource)
return_VALUE(-ENODEV);
return -ENODEV;
result = acpi_bus_get_device(handle, &device);
if (result) {
printk(KERN_WARNING PREFIX "Getting context [%p]\n", handle);
return_VALUE(result);
return result;
}
*resource = (struct acpi_power_resource *)acpi_driver_data(device);
if (!resource)
return_VALUE(-ENODEV);
return -ENODEV;
return_VALUE(0);
return 0;
}
static int acpi_power_get_state(struct acpi_power_resource *resource)
@ -121,14 +120,13 @@ static int acpi_power_get_state(struct acpi_power_resource *resource)
acpi_status status = AE_OK;
unsigned long sta = 0;
ACPI_FUNCTION_TRACE("acpi_power_get_state");
if (!resource)
return_VALUE(-EINVAL);
return -EINVAL;
status = acpi_evaluate_integer(resource->handle, "_STA", NULL, &sta);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
if (sta & 0x01)
resource->state = ACPI_POWER_RESOURCE_STATE_ON;
@ -138,7 +136,7 @@ static int acpi_power_get_state(struct acpi_power_resource *resource)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] is %s\n",
resource->name, resource->state ? "on" : "off"));
return_VALUE(0);
return 0;
}
static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
@ -147,20 +145,19 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
struct acpi_power_resource *resource = NULL;
u32 i = 0;
ACPI_FUNCTION_TRACE("acpi_power_get_list_state");
if (!list || !state)
return_VALUE(-EINVAL);
return -EINVAL;
/* The state of the list is 'on' IFF all resources are 'on'. */
for (i = 0; i < list->count; i++) {
result = acpi_power_get_context(list->handles[i], &resource);
if (result)
return_VALUE(result);
return result;
result = acpi_power_get_state(resource);
if (result)
return_VALUE(result);
return result;
*state = resource->state;
@ -171,7 +168,7 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource list is %s\n",
*state ? "on" : "off"));
return_VALUE(result);
return result;
}
static int acpi_power_on(acpi_handle handle)
@ -181,11 +178,10 @@ static int acpi_power_on(acpi_handle handle)
struct acpi_device *device = NULL;
struct acpi_power_resource *resource = NULL;
ACPI_FUNCTION_TRACE("acpi_power_on");
result = acpi_power_get_context(handle, &resource);
if (result)
return_VALUE(result);
return result;
resource->references++;
@ -193,29 +189,29 @@ static int acpi_power_on(acpi_handle handle)
|| (resource->state == ACPI_POWER_RESOURCE_STATE_ON)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] already on\n",
resource->name));
return_VALUE(0);
return 0;
}
status = acpi_evaluate_object(resource->handle, "_ON", NULL, NULL);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
result = acpi_power_get_state(resource);
if (result)
return_VALUE(result);
return result;
if (resource->state != ACPI_POWER_RESOURCE_STATE_ON)
return_VALUE(-ENOEXEC);
return -ENOEXEC;
/* Update the power resource's _device_ power state */
result = acpi_bus_get_device(resource->handle, &device);
if (result)
return_VALUE(result);
return result;
device->power.state = ACPI_STATE_D0;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] turned on\n",
resource->name));
return_VALUE(0);
return 0;
}
static int acpi_power_off_device(acpi_handle handle)
@ -225,11 +221,10 @@ static int acpi_power_off_device(acpi_handle handle)
struct acpi_device *device = NULL;
struct acpi_power_resource *resource = NULL;
ACPI_FUNCTION_TRACE("acpi_power_off_device");
result = acpi_power_get_context(handle, &resource);
if (result)
return_VALUE(result);
return result;
if (resource->references)
resource->references--;
@ -238,35 +233,35 @@ static int acpi_power_off_device(acpi_handle handle)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Resource [%s] is still in use, dereferencing\n",
device->pnp.bus_id));
return_VALUE(0);
return 0;
}
if (resource->state == ACPI_POWER_RESOURCE_STATE_OFF) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] already off\n",
device->pnp.bus_id));
return_VALUE(0);
return 0;
}
status = acpi_evaluate_object(resource->handle, "_OFF", NULL, NULL);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
result = acpi_power_get_state(resource);
if (result)
return_VALUE(result);
return result;
if (resource->state != ACPI_POWER_RESOURCE_STATE_OFF)
return_VALUE(-ENOEXEC);
return -ENOEXEC;
/* Update the power resource's _device_ power state */
result = acpi_bus_get_device(resource->handle, &device);
if (result)
return_VALUE(result);
return result;
device->power.state = ACPI_STATE_D3;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Resource [%s] turned off\n",
resource->name));
return_VALUE(0);
return 0;
}
/*
@ -282,9 +277,8 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev)
int i;
int ret = 0;
ACPI_FUNCTION_TRACE("acpi_enable_wakeup_device_power");
if (!dev || !dev->wakeup.flags.valid)
return_VALUE(-1);
return -1;
arg.integer.value = 1;
/* Open power resource */
@ -293,7 +287,7 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev)
if (ret) {
printk(KERN_ERR PREFIX "Transition power state\n");
dev->wakeup.flags.valid = 0;
return_VALUE(-1);
return -1;
}
}
@ -305,7 +299,7 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev)
ret = -1;
}
return_VALUE(ret);
return ret;
}
/*
@ -321,10 +315,9 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev)
int i;
int ret = 0;
ACPI_FUNCTION_TRACE("acpi_disable_wakeup_device_power");
if (!dev || !dev->wakeup.flags.valid)
return_VALUE(-1);
return -1;
arg.integer.value = 0;
/* Execute PSW */
@ -332,7 +325,7 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev)
if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
printk(KERN_ERR PREFIX "Evaluate _PSW\n");
dev->wakeup.flags.valid = 0;
return_VALUE(-1);
return -1;
}
/* Close power resource */
@ -341,11 +334,11 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev)
if (ret) {
printk(KERN_ERR PREFIX "Transition power state\n");
dev->wakeup.flags.valid = 0;
return_VALUE(-1);
return -1;
}
}
return_VALUE(ret);
return ret;
}
/* --------------------------------------------------------------------------
@ -359,10 +352,9 @@ int acpi_power_get_inferred_state(struct acpi_device *device)
int list_state = 0;
int i = 0;
ACPI_FUNCTION_TRACE("acpi_power_get_inferred_state");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
device->power.state = ACPI_STATE_UNKNOWN;
@ -377,17 +369,17 @@ int acpi_power_get_inferred_state(struct acpi_device *device)
result = acpi_power_get_list_state(list, &list_state);
if (result)
return_VALUE(result);
return result;
if (list_state == ACPI_POWER_RESOURCE_STATE_ON) {
device->power.state = i;
return_VALUE(0);
return 0;
}
}
device->power.state = ACPI_STATE_D3;
return_VALUE(0);
return 0;
}
int acpi_power_transition(struct acpi_device *device, int state)
@ -397,14 +389,13 @@ int acpi_power_transition(struct acpi_device *device, int state)
struct acpi_handle_list *tl = NULL; /* Target Resources */
int i = 0;
ACPI_FUNCTION_TRACE("acpi_power_transition");
if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
return_VALUE(-EINVAL);
return -EINVAL;
if ((device->power.state < ACPI_STATE_D0)
|| (device->power.state > ACPI_STATE_D3))
return_VALUE(-ENODEV);
return -ENODEV;
cl = &device->power.states[device->power.state].resources;
tl = &device->power.states[state].resources;
@ -444,7 +435,7 @@ int acpi_power_transition(struct acpi_device *device, int state)
printk(KERN_WARNING PREFIX "Transitioning device [%s] to D%d\n",
device->pnp.bus_id, state);
return_VALUE(result);
return result;
}
/* --------------------------------------------------------------------------
@ -457,7 +448,6 @@ static int acpi_power_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_power_resource *resource = NULL;
ACPI_FUNCTION_TRACE("acpi_power_seq_show");
resource = (struct acpi_power_resource *)seq->private;
@ -484,7 +474,7 @@ static int acpi_power_seq_show(struct seq_file *seq, void *offset)
resource->order, resource->references);
end:
return_VALUE(0);
return 0;
}
static int acpi_power_open_fs(struct inode *inode, struct file *file)
@ -496,34 +486,32 @@ static int acpi_power_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_power_add_fs");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_power_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
}
/* 'status' [R] */
entry = create_proc_entry(ACPI_POWER_FILE_STATUS,
S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-EIO);
return -EIO;
else {
entry->proc_fops = &acpi_power_fops;
entry->data = acpi_driver_data(device);
}
return_VALUE(0);
return 0;
}
static int acpi_power_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_power_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_POWER_FILE_STATUS,
@ -532,7 +520,7 @@ static int acpi_power_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
@ -547,14 +535,13 @@ static int acpi_power_add(struct acpi_device *device)
union acpi_object acpi_object;
struct acpi_buffer buffer = { sizeof(acpi_object), &acpi_object };
ACPI_FUNCTION_TRACE("acpi_power_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
resource = kmalloc(sizeof(struct acpi_power_resource), GFP_KERNEL);
if (!resource)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(resource, 0, sizeof(struct acpi_power_resource));
resource->handle = device->handle;
@ -599,17 +586,16 @@ static int acpi_power_add(struct acpi_device *device)
if (result)
kfree(resource);
return_VALUE(result);
return result;
}
static int acpi_power_remove(struct acpi_device *device, int type)
{
struct acpi_power_resource *resource = NULL;
ACPI_FUNCTION_TRACE("acpi_power_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
resource = (struct acpi_power_resource *)acpi_driver_data(device);
@ -617,31 +603,30 @@ static int acpi_power_remove(struct acpi_device *device, int type)
kfree(resource);
return_VALUE(0);
return 0;
}
static int __init acpi_power_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_power_init");
if (acpi_disabled)
return_VALUE(0);
return 0;
INIT_LIST_HEAD(&acpi_power_resource_list);
acpi_power_dir = proc_mkdir(ACPI_POWER_CLASS, acpi_root_dir);
if (!acpi_power_dir)
return_VALUE(-ENODEV);
return -ENODEV;
result = acpi_bus_register_driver(&acpi_power_driver);
if (result < 0) {
remove_proc_entry(ACPI_POWER_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
subsys_initcall(acpi_power_init);

111
drivers/acpi/processor_core.c
View File

@ -122,10 +122,9 @@ static int acpi_processor_errata_piix4(struct pci_dev *dev)
u8 value1 = 0;
u8 value2 = 0;
ACPI_FUNCTION_TRACE("acpi_processor_errata_piix4");
if (!dev)
return_VALUE(-EINVAL);
return -EINVAL;
/*
* Note that 'dev' references the PIIX4 ACPI Controller.
@ -218,7 +217,7 @@ static int acpi_processor_errata_piix4(struct pci_dev *dev)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Type-F DMA livelock erratum (C3 disabled)\n"));
return_VALUE(0);
return 0;
}
static int acpi_processor_errata(struct acpi_processor *pr)
@ -226,10 +225,9 @@ static int acpi_processor_errata(struct acpi_processor *pr)
int result = 0;
struct pci_dev *dev = NULL;
ACPI_FUNCTION_TRACE("acpi_processor_errata");
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
/*
* PIIX4
@ -242,7 +240,7 @@ static int acpi_processor_errata(struct acpi_processor *pr)
pci_dev_put(dev);
}
return_VALUE(result);
return result;
}
/* --------------------------------------------------------------------------
@ -258,10 +256,9 @@ static int acpi_processor_set_pdc(struct acpi_processor *pr)
struct acpi_object_list *pdc_in = pr->pdc;
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE("acpi_processor_set_pdc");
if (!pdc_in)
return_VALUE(status);
return status;
status = acpi_evaluate_object(pr->handle, "_PDC", pdc_in, NULL);
@ -269,7 +266,7 @@ static int acpi_processor_set_pdc(struct acpi_processor *pr)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Could not evaluate _PDC, using legacy perf. control...\n"));
return_VALUE(status);
return status;
}
/* --------------------------------------------------------------------------
@ -282,7 +279,6 @@ static int acpi_processor_info_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_processor *pr = (struct acpi_processor *)seq->private;
ACPI_FUNCTION_TRACE("acpi_processor_info_seq_show");
if (!pr)
goto end;
@ -301,7 +297,7 @@ static int acpi_processor_info_seq_show(struct seq_file *seq, void *offset)
pr->flags.limit ? "yes" : "no");
end:
return_VALUE(0);
return 0;
}
static int acpi_processor_info_open_fs(struct inode *inode, struct file *file)
@ -314,13 +310,12 @@ static int acpi_processor_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_processor_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_processor_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
}
acpi_device_dir(device)->owner = THIS_MODULE;
@ -328,7 +323,7 @@ static int acpi_processor_add_fs(struct acpi_device *device)
entry = create_proc_entry(ACPI_PROCESSOR_FILE_INFO,
S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-EIO);
return -EIO;
else {
entry->proc_fops = &acpi_processor_info_fops;
entry->data = acpi_driver_data(device);
@ -340,7 +335,7 @@ static int acpi_processor_add_fs(struct acpi_device *device)
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE(-EIO);
return -EIO;
else {
entry->proc_fops = &acpi_processor_throttling_fops;
entry->data = acpi_driver_data(device);
@ -352,19 +347,18 @@ static int acpi_processor_add_fs(struct acpi_device *device)
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE( -EIO);
return -EIO;
else {
entry->proc_fops = &acpi_processor_limit_fops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_processor_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_processor_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_PROCESSOR_FILE_INFO,
@ -377,7 +371,7 @@ static int acpi_processor_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* Use the acpiid in MADT to map cpus in case of SMP */
@ -424,10 +418,9 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
int cpu_index;
static int cpu0_initialized;
ACPI_FUNCTION_TRACE("acpi_processor_get_info");
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
if (num_online_cpus() > 1)
errata.smp = TRUE;
@ -454,7 +447,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX "Evaluating processor object\n");
return_VALUE(-ENODEV);
return -ENODEV;
}
/*
@ -486,7 +479,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
printk(KERN_ERR PREFIX
"Getting cpuindex for acpiid 0x%x\n",
pr->acpi_id);
return_VALUE(-ENODEV);
return -ENODEV;
}
}
@ -521,7 +514,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
acpi_processor_get_throttling_info(pr);
acpi_processor_get_limit_info(pr);
return_VALUE(0);
return 0;
}
static void *processor_device_array[NR_CPUS];
@ -532,14 +525,13 @@ static int acpi_processor_start(struct acpi_device *device)
acpi_status status = AE_OK;
struct acpi_processor *pr;
ACPI_FUNCTION_TRACE("acpi_processor_start");
pr = acpi_driver_data(device);
result = acpi_processor_get_info(pr);
if (result) {
/* Processor is physically not present */
return_VALUE(0);
return 0;
}
BUG_ON((pr->id >= NR_CPUS) || (pr->id < 0));
@ -553,7 +545,7 @@ static int acpi_processor_start(struct acpi_device *device)
processor_device_array[pr->id] != (void *)device) {
printk(KERN_WARNING "BIOS reported wrong ACPI id"
"for the processor\n");
return_VALUE(-ENODEV);
return -ENODEV;
}
processor_device_array[pr->id] = (void *)device;
@ -581,7 +573,7 @@ static int acpi_processor_start(struct acpi_device *device)
end:
return_VALUE(result);
return result;
}
static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
@ -589,13 +581,12 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
struct acpi_processor *pr = (struct acpi_processor *)data;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_processor_notify");
if (!pr)
return_VOID;
return;
if (acpi_bus_get_device(pr->handle, &device))
return_VOID;
return;
switch (event) {
case ACPI_PROCESSOR_NOTIFY_PERFORMANCE:
@ -613,21 +604,20 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static int acpi_processor_add(struct acpi_device *device)
{
struct acpi_processor *pr = NULL;
ACPI_FUNCTION_TRACE("acpi_processor_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
pr = kmalloc(sizeof(struct acpi_processor), GFP_KERNEL);
if (!pr)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(pr, 0, sizeof(struct acpi_processor));
pr->handle = device->handle;
@ -635,7 +625,7 @@ static int acpi_processor_add(struct acpi_device *device)
strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
acpi_driver_data(device) = pr;
return_VALUE(0);
return 0;
}
static int acpi_processor_remove(struct acpi_device *device, int type)
@ -643,21 +633,20 @@ static int acpi_processor_remove(struct acpi_device *device, int type)
acpi_status status = AE_OK;
struct acpi_processor *pr = NULL;
ACPI_FUNCTION_TRACE("acpi_processor_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
pr = (struct acpi_processor *)acpi_driver_data(device);
if (pr->id >= NR_CPUS) {
kfree(pr);
return_VALUE(0);
return 0;
}
if (type == ACPI_BUS_REMOVAL_EJECT) {
if (acpi_processor_handle_eject(pr))
return_VALUE(-EINVAL);
return -EINVAL;
}
acpi_processor_power_exit(pr, device);
@ -671,7 +660,7 @@ static int acpi_processor_remove(struct acpi_device *device, int type)
kfree(pr);
return_VALUE(0);
return 0;
}
#ifdef CONFIG_ACPI_HOTPLUG_CPU
@ -686,14 +675,13 @@ static int is_processor_present(acpi_handle handle)
acpi_status status;
unsigned long sta = 0;
ACPI_FUNCTION_TRACE("is_processor_present");
status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
if (ACPI_FAILURE(status) || !(sta & ACPI_STA_PRESENT)) {
ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
return_VALUE(0);
return 0;
}
return_VALUE(1);
return 1;
}
static
@ -703,30 +691,29 @@ int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device)
struct acpi_device *pdev;
struct acpi_processor *pr;
ACPI_FUNCTION_TRACE("acpi_processor_device_add");
if (acpi_get_parent(handle, &phandle)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
if (acpi_bus_get_device(phandle, &pdev)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
if (acpi_bus_add(device, pdev, handle, ACPI_BUS_TYPE_PROCESSOR)) {
return_VALUE(-ENODEV);
return -ENODEV;
}
acpi_bus_start(*device);
pr = acpi_driver_data(*device);
if (!pr)
return_VALUE(-ENODEV);
return -ENODEV;
if ((pr->id >= 0) && (pr->id < NR_CPUS)) {
kobject_uevent(&(*device)->kobj, KOBJ_ONLINE);
}
return_VALUE(0);
return 0;
}
static void
@ -736,7 +723,6 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
struct acpi_device *device = NULL;
int result;
ACPI_FUNCTION_TRACE("acpi_processor_hotplug_notify");
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
@ -788,7 +774,7 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
if (!pr) {
printk(KERN_ERR PREFIX
"Driver data is NULL, dropping EJECT\n");
return_VOID;
return;
}
if ((pr->id < NR_CPUS) && (cpu_present(pr->id)))
@ -800,7 +786,7 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static acpi_status
@ -839,21 +825,20 @@ processor_walk_namespace_cb(acpi_handle handle,
static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu)
{
ACPI_FUNCTION_TRACE("acpi_processor_hotadd_init");
if (!is_processor_present(handle)) {
return_VALUE(AE_ERROR);
return AE_ERROR;
}
if (acpi_map_lsapic(handle, p_cpu))
return_VALUE(AE_ERROR);
return AE_ERROR;
if (arch_register_cpu(*p_cpu)) {
acpi_unmap_lsapic(*p_cpu);
return_VALUE(AE_ERROR);
return AE_ERROR;
}
return_VALUE(AE_OK);
return AE_OK;
}
static int acpi_processor_handle_eject(struct acpi_processor *pr)
@ -910,20 +895,19 @@ static int __init acpi_processor_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_processor_init");
memset(&processors, 0, sizeof(processors));
memset(&errata, 0, sizeof(errata));
acpi_processor_dir = proc_mkdir(ACPI_PROCESSOR_CLASS, acpi_root_dir);
if (!acpi_processor_dir)
return_VALUE(0);
return 0;
acpi_processor_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_processor_driver);
if (result < 0) {
remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
return_VALUE(0);
return 0;
}
acpi_processor_install_hotplug_notify();
@ -932,12 +916,11 @@ static int __init acpi_processor_init(void)
acpi_processor_ppc_init();
return_VALUE(0);
return 0;
}
static void __exit acpi_processor_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_processor_exit");
acpi_processor_ppc_exit();
@ -949,7 +932,7 @@ static void __exit acpi_processor_exit(void)
remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_processor_init);

71
drivers/acpi/processor_idle.c
View File

@ -517,10 +517,9 @@ static int acpi_processor_set_power_policy(struct acpi_processor *pr)
struct acpi_processor_cx *higher = NULL;
struct acpi_processor_cx *cx;
ACPI_FUNCTION_TRACE("acpi_processor_set_power_policy");
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
/*
* This function sets the default Cx state policy (OS idle handler).
@ -544,7 +543,7 @@ static int acpi_processor_set_power_policy(struct acpi_processor *pr)
}
if (!state_is_set)
return_VALUE(-ENODEV);
return -ENODEV;
/* demotion */
for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {
@ -583,18 +582,17 @@ static int acpi_processor_set_power_policy(struct acpi_processor *pr)
higher = cx;
}
return_VALUE(0);
return 0;
}
static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)
{
ACPI_FUNCTION_TRACE("acpi_processor_get_power_info_fadt");
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
if (!pr->pblk)
return_VALUE(-ENODEV);
return -ENODEV;
/* if info is obtained from pblk/fadt, type equals state */
pr->power.states[ACPI_STATE_C2].type = ACPI_STATE_C2;
@ -606,7 +604,7 @@ static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)
* an SMP system.
*/
if ((num_online_cpus() > 1) && !acpi_fadt.plvl2_up)
return_VALUE(-ENODEV);
return -ENODEV;
#endif
/* determine C2 and C3 address from pblk */
@ -622,12 +620,11 @@ static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)
pr->power.states[ACPI_STATE_C2].address,
pr->power.states[ACPI_STATE_C3].address));
return_VALUE(0);
return 0;
}
static int acpi_processor_get_power_info_default_c1(struct acpi_processor *pr)
{
ACPI_FUNCTION_TRACE("acpi_processor_get_power_info_default_c1");
/* Zero initialize all the C-states info. */
memset(pr->power.states, 0, sizeof(pr->power.states));
@ -640,7 +637,7 @@ static int acpi_processor_get_power_info_default_c1(struct acpi_processor *pr)
pr->power.states[ACPI_STATE_C0].valid = 1;
pr->power.states[ACPI_STATE_C1].valid = 1;
return_VALUE(0);
return 0;
}
static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
@ -652,10 +649,9 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *cst;
ACPI_FUNCTION_TRACE("acpi_processor_get_power_info_cst");
if (nocst)
return_VALUE(-ENODEV);
return -ENODEV;
current_count = 1;
@ -667,7 +663,7 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
status = acpi_evaluate_object(pr->handle, "_CST", NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No _CST, giving up\n"));
return_VALUE(-ENODEV);
return -ENODEV;
}
cst = (union acpi_object *)buffer.pointer;
@ -773,15 +769,14 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
end:
acpi_os_free(buffer.pointer);
return_VALUE(status);
return status;
}
static void acpi_processor_power_verify_c2(struct acpi_processor_cx *cx)
{
ACPI_FUNCTION_TRACE("acpi_processor_get_power_verify_c2");
if (!cx->address)
return_VOID;
return;
/*
* C2 latency must be less than or equal to 100
@ -790,7 +785,7 @@ static void acpi_processor_power_verify_c2(struct acpi_processor_cx *cx)
else if (cx->latency > ACPI_PROCESSOR_MAX_C2_LATENCY) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"latency too large [%d]\n", cx->latency));
return_VOID;
return;
}
/*
@ -800,7 +795,7 @@ static void acpi_processor_power_verify_c2(struct acpi_processor_cx *cx)
cx->valid = 1;
cx->latency_ticks = US_TO_PM_TIMER_TICKS(cx->latency);
return_VOID;
return;
}
static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
@ -808,10 +803,9 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
{
static int bm_check_flag;
ACPI_FUNCTION_TRACE("acpi_processor_get_power_verify_c3");
if (!cx->address)
return_VOID;
return;
/*
* C3 latency must be less than or equal to 1000
@ -820,7 +814,7 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
else if (cx->latency > ACPI_PROCESSOR_MAX_C3_LATENCY) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"latency too large [%d]\n", cx->latency));
return_VOID;
return;
}
/*
@ -833,7 +827,7 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
else if (errata.piix4.fdma) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"C3 not supported on PIIX4 with Type-F DMA\n"));
return_VOID;
return;
}
/* All the logic here assumes flags.bm_check is same across all CPUs */
@ -850,7 +844,7 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
if (!pr->flags.bm_control) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"C3 support requires bus mastering control\n"));
return_VOID;
return;
}
} else {
/*
@ -861,7 +855,7 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Cache invalidation should work properly"
" for C3 to be enabled on SMP systems\n"));
return_VOID;
return;
}
acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD,
0, ACPI_MTX_DO_NOT_LOCK);
@ -876,7 +870,7 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
cx->valid = 1;
cx->latency_ticks = US_TO_PM_TIMER_TICKS(cx->latency);
return_VOID;
return;
}
static int acpi_processor_power_verify(struct acpi_processor *pr)
@ -935,7 +929,6 @@ static int acpi_processor_get_power_info(struct acpi_processor *pr)
unsigned int i;
int result;
ACPI_FUNCTION_TRACE("acpi_processor_get_power_info");
/* NOTE: the idle thread may not be running while calling
* this function */
@ -958,7 +951,7 @@ static int acpi_processor_get_power_info(struct acpi_processor *pr)
*/
result = acpi_processor_set_power_policy(pr);
if (result)
return_VALUE(result);
return result;
/*
* if one state of type C2 or C3 is available, mark this
@ -972,24 +965,23 @@ static int acpi_processor_get_power_info(struct acpi_processor *pr)
}
}
return_VALUE(0);
return 0;
}
int acpi_processor_cst_has_changed(struct acpi_processor *pr)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_processor_cst_has_changed");
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
if (nocst) {
return_VALUE(-ENODEV);
return -ENODEV;
}
if (!pr->flags.power_setup_done)
return_VALUE(-ENODEV);
return -ENODEV;
/* Fall back to the default idle loop */
pm_idle = pm_idle_save;
@ -1000,7 +992,7 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
if ((pr->flags.power == 1) && (pr->flags.power_setup_done))
pm_idle = acpi_processor_idle;
return_VALUE(result);
return result;
}
/* proc interface */
@ -1010,7 +1002,6 @@ static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset)
struct acpi_processor *pr = (struct acpi_processor *)seq->private;
unsigned int i;
ACPI_FUNCTION_TRACE("acpi_processor_power_seq_show");
if (!pr)
goto end;
@ -1068,7 +1059,7 @@ static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset)
}
end:
return_VALUE(0);
return 0;
}
static int acpi_processor_power_open_fs(struct inode *inode, struct file *file)
@ -1092,7 +1083,6 @@ int acpi_processor_power_init(struct acpi_processor *pr,
struct proc_dir_entry *entry = NULL;
unsigned int i;
ACPI_FUNCTION_TRACE("acpi_processor_power_init");
if (!first_run) {
dmi_check_system(processor_power_dmi_table);
@ -1104,7 +1094,7 @@ int acpi_processor_power_init(struct acpi_processor *pr,
}
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
if (acpi_fadt.cst_cnt && !nocst) {
status =
@ -1149,13 +1139,12 @@ int acpi_processor_power_init(struct acpi_processor *pr,
pr->flags.power_setup_done = 1;
return_VALUE(0);
return 0;
}
int acpi_processor_power_exit(struct acpi_processor *pr,
struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_processor_power_exit");
pr->flags.power_setup_done = 0;
@ -1175,5 +1164,5 @@ int acpi_processor_power_exit(struct acpi_processor *pr,
cpu_idle_wait();
}
return_VALUE(0);
return 0;
}

87
drivers/acpi/processor_perflib.c
View File

@ -108,10 +108,9 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
acpi_status status = 0;
unsigned long ppc = 0;
ACPI_FUNCTION_TRACE("acpi_processor_get_platform_limit");
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
/*
* _PPC indicates the maximum state currently supported by the platform
@ -124,12 +123,12 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PPC"));
return_VALUE(-ENODEV);
return -ENODEV;
}
pr->performance_platform_limit = (int)ppc;
return_VALUE(0);
return 0;
}
int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
@ -168,12 +167,11 @@ static int acpi_processor_get_performance_control(struct acpi_processor *pr)
union acpi_object *pct = NULL;
union acpi_object obj = { 0 };
ACPI_FUNCTION_TRACE("acpi_processor_get_performance_control");
status = acpi_evaluate_object(pr->handle, "_PCT", NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PCT"));
return_VALUE(-ENODEV);
return -ENODEV;
}
pct = (union acpi_object *)buffer.pointer;
@ -220,7 +218,7 @@ static int acpi_processor_get_performance_control(struct acpi_processor *pr)
end:
acpi_os_free(buffer.pointer);
return_VALUE(result);
return result;
}
static int acpi_processor_get_performance_states(struct acpi_processor *pr)
@ -233,12 +231,11 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
union acpi_object *pss = NULL;
int i;
ACPI_FUNCTION_TRACE("acpi_processor_get_performance_states");
status = acpi_evaluate_object(pr->handle, "_PSS", NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PSS"));
return_VALUE(-ENODEV);
return -ENODEV;
}
pss = (union acpi_object *)buffer.pointer;
@ -299,7 +296,7 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr)
end:
acpi_os_free(buffer.pointer);
return_VALUE(result);
return result;
}
static int acpi_processor_get_performance_info(struct acpi_processor *pr)
@ -308,31 +305,30 @@ static int acpi_processor_get_performance_info(struct acpi_processor *pr)
acpi_status status = AE_OK;
acpi_handle handle = NULL;
ACPI_FUNCTION_TRACE("acpi_processor_get_performance_info");
if (!pr || !pr->performance || !pr->handle)
return_VALUE(-EINVAL);
return -EINVAL;
status = acpi_get_handle(pr->handle, "_PCT", &handle);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"ACPI-based processor performance control unavailable\n"));
return_VALUE(-ENODEV);
return -ENODEV;
}
result = acpi_processor_get_performance_control(pr);
if (result)
return_VALUE(result);
return result;
result = acpi_processor_get_performance_states(pr);
if (result)
return_VALUE(result);
return result;
result = acpi_processor_get_platform_limit(pr);
if (result)
return_VALUE(result);
return result;
return_VALUE(0);
return 0;
}
int acpi_processor_notify_smm(struct module *calling_module)
@ -340,13 +336,12 @@ int acpi_processor_notify_smm(struct module *calling_module)
acpi_status status;
static int is_done = 0;
ACPI_FUNCTION_TRACE("acpi_processor_notify_smm");
if (!(acpi_processor_ppc_status & PPC_REGISTERED))
return_VALUE(-EBUSY);
return -EBUSY;
if (!try_module_get(calling_module))
return_VALUE(-EINVAL);
return -EINVAL;
/* is_done is set to negative if an error occured,
* and to postitive if _no_ error occured, but SMM
@ -355,10 +350,10 @@ int acpi_processor_notify_smm(struct module *calling_module)
*/
if (is_done > 0) {
module_put(calling_module);
return_VALUE(0);
return 0;
} else if (is_done < 0) {
module_put(calling_module);
return_VALUE(is_done);
return is_done;
}
is_done = -EIO;
@ -367,7 +362,7 @@ int acpi_processor_notify_smm(struct module *calling_module)
if ((!acpi_fadt.smi_cmd) || (!acpi_fadt.pstate_cnt)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No SMI port or pstate_cnt\n"));
module_put(calling_module);
return_VALUE(0);
return 0;
}
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@ -389,7 +384,7 @@ int acpi_processor_notify_smm(struct module *calling_module)
"smi_cmd [0x%x]", acpi_fadt.pstate_cnt,
acpi_fadt.smi_cmd));
module_put(calling_module);
return_VALUE(status);
return status;
}
/* Success. If there's no _PPC, we need to fear nothing, so
@ -399,7 +394,7 @@ int acpi_processor_notify_smm(struct module *calling_module)
if (!(acpi_processor_ppc_status & PPC_IN_USE))
module_put(calling_module);
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_processor_notify_smm);
@ -420,7 +415,6 @@ static int acpi_processor_perf_seq_show(struct seq_file *seq, void *offset)
struct acpi_processor *pr = (struct acpi_processor *)seq->private;
int i;
ACPI_FUNCTION_TRACE("acpi_processor_perf_seq_show");
if (!pr)
goto end;
@ -444,7 +438,7 @@ static int acpi_processor_perf_seq_show(struct seq_file *seq, void *offset)
(u32) pr->performance->states[i].transition_latency);
end:
return_VALUE(0);
return 0;
}
static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file)
@ -466,23 +460,22 @@ acpi_processor_write_performance(struct file *file,
unsigned int new_state = 0;
struct cpufreq_policy policy;
ACPI_FUNCTION_TRACE("acpi_processor_write_performance");
if (!pr || (count > sizeof(state_string) - 1))
return_VALUE(-EINVAL);
return -EINVAL;
perf = pr->performance;
if (!perf)
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(state_string, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
state_string[count] = '\0';
new_state = simple_strtoul(state_string, NULL, 0);
if (new_state >= perf->state_count)
return_VALUE(-EINVAL);
return -EINVAL;
cpufreq_get_policy(&policy, pr->id);
@ -492,9 +485,9 @@ acpi_processor_write_performance(struct file *file,
result = cpufreq_set_policy(&policy);
if (result)
return_VALUE(result);
return result;
return_VALUE(count);
return count;
}
static void acpi_cpufreq_add_file(struct acpi_processor *pr)
@ -502,10 +495,9 @@ static void acpi_cpufreq_add_file(struct acpi_processor *pr)
struct proc_dir_entry *entry = NULL;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_cpufreq_addfile");
if (acpi_bus_get_device(pr->handle, &device))
return_VOID;
return;
/* add file 'performance' [R/W] */
entry = create_proc_entry(ACPI_PROCESSOR_FILE_PERFORMANCE,
@ -517,23 +509,22 @@ static void acpi_cpufreq_add_file(struct acpi_processor *pr)
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VOID;
return;
}
static void acpi_cpufreq_remove_file(struct acpi_processor *pr)
{
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_cpufreq_addfile");
if (acpi_bus_get_device(pr->handle, &device))
return_VOID;
return;
/* remove file 'performance' */
remove_proc_entry(ACPI_PROCESSOR_FILE_PERFORMANCE,
acpi_device_dir(device));
return_VOID;
return;
}
#else
@ -777,22 +768,21 @@ acpi_processor_register_performance(struct acpi_processor_performance
{
struct acpi_processor *pr;
ACPI_FUNCTION_TRACE("acpi_processor_register_performance");
if (!(acpi_processor_ppc_status & PPC_REGISTERED))
return_VALUE(-EINVAL);
return -EINVAL;
mutex_lock(&performance_mutex);
pr = processors[cpu];
if (!pr) {
mutex_unlock(&performance_mutex);
return_VALUE(-ENODEV);
return -ENODEV;
}
if (pr->performance) {
mutex_unlock(&performance_mutex);
return_VALUE(-EBUSY);
return -EBUSY;
}
WARN_ON(!performance);
@ -802,13 +792,13 @@ acpi_processor_register_performance(struct acpi_processor_performance
if (acpi_processor_get_performance_info(pr)) {
pr->performance = NULL;
mutex_unlock(&performance_mutex);
return_VALUE(-EIO);
return -EIO;
}
acpi_cpufreq_add_file(pr);
mutex_unlock(&performance_mutex);
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_processor_register_performance);
@ -819,14 +809,13 @@ acpi_processor_unregister_performance(struct acpi_processor_performance
{
struct acpi_processor *pr;
ACPI_FUNCTION_TRACE("acpi_processor_unregister_performance");
mutex_lock(&performance_mutex);
pr = processors[cpu];
if (!pr) {
mutex_unlock(&performance_mutex);
return_VOID;
return;
}
if (pr->performance)
@ -837,7 +826,7 @@ acpi_processor_unregister_performance(struct acpi_processor_performance
mutex_unlock(&performance_mutex);
return_VOID;
return;
}
EXPORT_SYMBOL(acpi_processor_unregister_performance);

37
drivers/acpi/processor_thermal.c
View File

@ -54,13 +54,12 @@ static int acpi_processor_apply_limit(struct acpi_processor *pr)
u16 px = 0;
u16 tx = 0;
ACPI_FUNCTION_TRACE("acpi_processor_apply_limit");
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
if (!pr->flags.limit)
return_VALUE(-ENODEV);
return -ENODEV;
if (pr->flags.throttling) {
if (pr->limit.user.tx > tx)
@ -84,7 +83,7 @@ static int acpi_processor_apply_limit(struct acpi_processor *pr)
if (result)
printk(KERN_ERR PREFIX "Unable to set limit\n");
return_VALUE(result);
return result;
}
#ifdef CONFIG_CPU_FREQ
@ -200,19 +199,18 @@ int acpi_processor_set_thermal_limit(acpi_handle handle, int type)
struct acpi_device *device = NULL;
int tx = 0, max_tx_px = 0;
ACPI_FUNCTION_TRACE("acpi_processor_set_thermal_limit");
if ((type < ACPI_PROCESSOR_LIMIT_NONE)
|| (type > ACPI_PROCESSOR_LIMIT_DECREMENT))
return_VALUE(-EINVAL);
return -EINVAL;
result = acpi_bus_get_device(handle, &device);
if (result)
return_VALUE(result);
return result;
pr = (struct acpi_processor *)acpi_driver_data(device);
if (!pr)
return_VALUE(-ENODEV);
return -ENODEV;
/* Thermal limits are always relative to the current Px/Tx state. */
if (pr->flags.throttling)
@ -296,22 +294,21 @@ int acpi_processor_set_thermal_limit(acpi_handle handle, int type)
} else
result = 0;
if (max_tx_px)
return_VALUE(1);
return 1;
else
return_VALUE(result);
return result;
}
int acpi_processor_get_limit_info(struct acpi_processor *pr)
{
ACPI_FUNCTION_TRACE("acpi_processor_get_limit_info");
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
if (pr->flags.throttling)
pr->flags.limit = 1;
return_VALUE(0);
return 0;
}
/* /proc interface */
@ -320,7 +317,6 @@ static int acpi_processor_limit_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_processor *pr = (struct acpi_processor *)seq->private;
ACPI_FUNCTION_TRACE("acpi_processor_limit_seq_show");
if (!pr)
goto end;
@ -338,7 +334,7 @@ static int acpi_processor_limit_seq_show(struct seq_file *seq, void *offset)
pr->limit.thermal.px, pr->limit.thermal.tx);
end:
return_VALUE(0);
return 0;
}
static int acpi_processor_limit_open_fs(struct inode *inode, struct file *file)
@ -358,34 +354,33 @@ static ssize_t acpi_processor_write_limit(struct file * file,
int px = 0;
int tx = 0;
ACPI_FUNCTION_TRACE("acpi_processor_write_limit");
if (!pr || (count > sizeof(limit_string) - 1)) {
return_VALUE(-EINVAL);
return -EINVAL;
}
if (copy_from_user(limit_string, buffer, count)) {
return_VALUE(-EFAULT);
return -EFAULT;
}
limit_string[count] = '\0';
if (sscanf(limit_string, "%d:%d", &px, &tx) != 2) {
printk(KERN_ERR PREFIX "Invalid data format\n");
return_VALUE(-EINVAL);
return -EINVAL;
}
if (pr->flags.throttling) {
if ((tx < 0) || (tx > (pr->throttling.state_count - 1))) {
printk(KERN_ERR PREFIX "Invalid tx\n");
return_VALUE(-EINVAL);
return -EINVAL;
}
pr->limit.user.tx = tx;
}
result = acpi_processor_apply_limit(pr);
return_VALUE(count);
return count;
}
struct file_operations acpi_processor_limit_fops = {

43
drivers/acpi/processor_throttling.c
View File

@ -55,13 +55,12 @@ static int acpi_processor_get_throttling(struct acpi_processor *pr)
u32 duty_mask = 0;
u32 duty_value = 0;
ACPI_FUNCTION_TRACE("acpi_processor_get_throttling");
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
if (!pr->flags.throttling)
return_VALUE(-ENODEV);
return -ENODEV;
pr->throttling.state = 0;
@ -93,7 +92,7 @@ static int acpi_processor_get_throttling(struct acpi_processor *pr)
"Throttling state is T%d (%d%% throttling applied)\n",
state, pr->throttling.states[state].performance));
return_VALUE(0);
return 0;
}
int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
@ -102,19 +101,18 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
u32 duty_mask = 0;
u32 duty_value = 0;
ACPI_FUNCTION_TRACE("acpi_processor_set_throttling");
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
if ((state < 0) || (state > (pr->throttling.state_count - 1)))
return_VALUE(-EINVAL);
return -EINVAL;
if (!pr->flags.throttling)
return_VALUE(-ENODEV);
return -ENODEV;
if (state == pr->throttling.state)
return_VALUE(0);
return 0;
/*
* Calculate the duty_value and duty_mask.
@ -165,7 +163,7 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
(pr->throttling.states[state].performance ? pr->
throttling.states[state].performance / 10 : 0)));
return_VALUE(0);
return 0;
}
int acpi_processor_get_throttling_info(struct acpi_processor *pr)
@ -174,7 +172,6 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
int step = 0;
int i = 0;
ACPI_FUNCTION_TRACE("acpi_processor_get_throttling_info");
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"pblk_address[0x%08x] duty_offset[%d] duty_width[%d]\n",
@ -183,21 +180,21 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
pr->throttling.duty_width));
if (!pr)
return_VALUE(-EINVAL);
return -EINVAL;
/* TBD: Support ACPI 2.0 objects */
if (!pr->throttling.address) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No throttling register\n"));
return_VALUE(0);
return 0;
} else if (!pr->throttling.duty_width) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No throttling states\n"));
return_VALUE(0);
return 0;
}
/* TBD: Support duty_cycle values that span bit 4. */
else if ((pr->throttling.duty_offset + pr->throttling.duty_width) > 4) {
printk(KERN_WARNING PREFIX "duty_cycle spans bit 4\n");
return_VALUE(0);
return 0;
}
/*
@ -208,7 +205,7 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
if (errata.piix4.throttle) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Throttling not supported on PIIX4 A- or B-step\n"));
return_VALUE(0);
return 0;
}
pr->throttling.state_count = 1 << acpi_fadt.duty_width;
@ -254,7 +251,7 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
if (result)
pr->flags.throttling = 0;
return_VALUE(result);
return result;
}
/* proc interface */
@ -266,7 +263,6 @@ static int acpi_processor_throttling_seq_show(struct seq_file *seq,
int i = 0;
int result = 0;
ACPI_FUNCTION_TRACE("acpi_processor_throttling_seq_show");
if (!pr)
goto end;
@ -296,7 +292,7 @@ static int acpi_processor_throttling_seq_show(struct seq_file *seq,
throttling.states[i].performance / 10 : 0));
end:
return_VALUE(0);
return 0;
}
static int acpi_processor_throttling_open_fs(struct inode *inode,
@ -315,13 +311,12 @@ static ssize_t acpi_processor_write_throttling(struct file * file,
struct acpi_processor *pr = (struct acpi_processor *)m->private;
char state_string[12] = { '\0' };
ACPI_FUNCTION_TRACE("acpi_processor_write_throttling");
if (!pr || (count > sizeof(state_string) - 1))
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(state_string, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
state_string[count] = '\0';
@ -329,9 +324,9 @@ static ssize_t acpi_processor_write_throttling(struct file * file,
simple_strtoul(state_string,
NULL, 0));
if (result)
return_VALUE(result);
return result;
return_VALUE(count);
return count;
}
struct file_operations acpi_processor_throttling_fops = {

77
drivers/acpi/scan.c
View File

@ -162,11 +162,10 @@ static void acpi_device_unregister(struct acpi_device *device, int type)
void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context)
{
ACPI_FUNCTION_TRACE("acpi_bus_data_handler");
/* TBD */
return_VOID;
return;
}
static int acpi_bus_get_power_flags(struct acpi_device *device)
@ -175,7 +174,6 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
acpi_handle handle = NULL;
u32 i = 0;
ACPI_FUNCTION_TRACE("acpi_bus_get_power_flags");
/*
* Power Management Flags
@ -228,7 +226,7 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
device->power.state = ACPI_STATE_UNKNOWN;
return_VALUE(0);
return 0;
}
int acpi_match_ids(struct acpi_device *device, char *ids)
@ -306,7 +304,6 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *package = NULL;
ACPI_FUNCTION_TRACE("acpi_bus_get_wakeup_flags");
/* _PRW */
status = acpi_evaluate_object(device->handle, "_PRW", NULL, &buffer);
@ -332,7 +329,7 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
end:
if (ACPI_FAILURE(status))
device->flags.wake_capable = 0;
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
@ -488,19 +485,18 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_bus_driver_init");
if (!device || !driver)
return_VALUE(-EINVAL);
return -EINVAL;
if (!driver->ops.add)
return_VALUE(-ENOSYS);
return -ENOSYS;
result = driver->ops.add(device);
if (result) {
device->driver = NULL;
acpi_driver_data(device) = NULL;
return_VALUE(result);
return result;
}
device->driver = driver;
@ -512,7 +508,7 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Driver successfully bound to device\n"));
return_VALUE(0);
return 0;
}
static int acpi_start_single_object(struct acpi_device *device)
@ -520,10 +516,9 @@ static int acpi_start_single_object(struct acpi_device *device)
int result = 0;
struct acpi_driver *driver;
ACPI_FUNCTION_TRACE("acpi_start_single_object");
if (!(driver = device->driver))
return_VALUE(0);
return 0;
if (driver->ops.start) {
result = driver->ops.start(device);
@ -531,14 +526,13 @@ static int acpi_start_single_object(struct acpi_device *device)
driver->ops.remove(device, ACPI_BUS_REMOVAL_NORMAL);
}
return_VALUE(result);
return result;
}
static void acpi_driver_attach(struct acpi_driver *drv)
{
struct list_head *node, *next;
ACPI_FUNCTION_TRACE("acpi_driver_attach");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_device_list) {
@ -567,7 +561,6 @@ static void acpi_driver_detach(struct acpi_driver *drv)
{
struct list_head *node, *next;
ACPI_FUNCTION_TRACE("acpi_driver_detach");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_device_list) {
@ -597,17 +590,16 @@ static void acpi_driver_detach(struct acpi_driver *drv)
*/
int acpi_bus_register_driver(struct acpi_driver *driver)
{
ACPI_FUNCTION_TRACE("acpi_bus_register_driver");
if (acpi_disabled)
return_VALUE(-ENODEV);
return -ENODEV;
spin_lock(&acpi_device_lock);
list_add_tail(&driver->node, &acpi_bus_drivers);
spin_unlock(&acpi_device_lock);
acpi_driver_attach(driver);
return_VALUE(0);
return 0;
}
EXPORT_SYMBOL(acpi_bus_register_driver);
@ -645,7 +637,6 @@ static int acpi_bus_find_driver(struct acpi_device *device)
int result = 0;
struct list_head *node, *next;
ACPI_FUNCTION_TRACE("acpi_bus_find_driver");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_bus_drivers) {
@ -665,7 +656,7 @@ static int acpi_bus_find_driver(struct acpi_device *device)
spin_unlock(&acpi_device_lock);
Done:
return_VALUE(result);
return result;
}
/* --------------------------------------------------------------------------
@ -677,7 +668,6 @@ static int acpi_bus_get_flags(struct acpi_device *device)
acpi_status status = AE_OK;
acpi_handle temp = NULL;
ACPI_FUNCTION_TRACE("acpi_bus_get_flags");
/* Presence of _STA indicates 'dynamic_status' */
status = acpi_get_handle(device->handle, "_STA", &temp);
@ -723,7 +713,7 @@ static int acpi_bus_get_flags(struct acpi_device *device)
/* TBD: Peformance management */
return_VALUE(0);
return 0;
}
static void acpi_device_get_busid(struct acpi_device *device,
@ -917,10 +907,9 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
int result = 0;
struct acpi_driver *driver;
ACPI_FUNCTION_TRACE("acpi_bus_remove");
if (!dev)
return_VALUE(-EINVAL);
return -EINVAL;
driver = dev->driver;
@ -929,12 +918,12 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
if (driver->ops.stop) {
result = driver->ops.stop(dev, ACPI_BUS_REMOVAL_EJECT);
if (result)
return_VALUE(result);
return result;
}
result = dev->driver->ops.remove(dev, ACPI_BUS_REMOVAL_EJECT);
if (result) {
return_VALUE(result);
return result;
}
atomic_dec(&dev->driver->references);
@ -943,7 +932,7 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
}
if (!rmdevice)
return_VALUE(0);
return 0;
if (dev->flags.bus_address) {
if ((dev->parent) && (dev->parent->ops.unbind))
@ -952,7 +941,7 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice)
acpi_device_unregister(dev, ACPI_BUS_REMOVAL_EJECT);
return_VALUE(0);
return 0;
}
static int
@ -962,15 +951,14 @@ acpi_add_single_object(struct acpi_device **child,
int result = 0;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_add_single_object");
if (!child)
return_VALUE(-EINVAL);
return -EINVAL;
device = kmalloc(sizeof(struct acpi_device), GFP_KERNEL);
if (!device) {
printk(KERN_ERR PREFIX "Memory allocation error\n");
return_VALUE(-ENOMEM);
return -ENOMEM;
}
memset(device, 0, sizeof(struct acpi_device));
@ -1095,7 +1083,7 @@ acpi_add_single_object(struct acpi_device **child,
kfree(device);
}
return_VALUE(result);
return result;
}
static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
@ -1108,10 +1096,9 @@ static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
acpi_object_type type = 0;
u32 level = 1;
ACPI_FUNCTION_TRACE("acpi_bus_scan");
if (!start)
return_VALUE(-EINVAL);
return -EINVAL;
parent = start;
phandle = start->handle;
@ -1208,7 +1195,7 @@ static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops)
}
}
return_VALUE(0);
return 0;
}
int
@ -1218,7 +1205,6 @@ acpi_bus_add(struct acpi_device **child,
int result;
struct acpi_bus_ops ops;
ACPI_FUNCTION_TRACE("acpi_bus_add");
result = acpi_add_single_object(child, parent, handle, type);
if (!result) {
@ -1226,7 +1212,7 @@ acpi_bus_add(struct acpi_device **child,
ops.acpi_op_add = 1;
result = acpi_bus_scan(*child, &ops);
}
return_VALUE(result);
return result;
}
EXPORT_SYMBOL(acpi_bus_add);
@ -1236,10 +1222,9 @@ int acpi_bus_start(struct acpi_device *device)
int result;
struct acpi_bus_ops ops;
ACPI_FUNCTION_TRACE("acpi_bus_start");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
result = acpi_start_single_object(device);
if (!result) {
@ -1247,7 +1232,7 @@ int acpi_bus_start(struct acpi_device *device)
ops.acpi_op_start = 1;
result = acpi_bus_scan(device, &ops);
}
return_VALUE(result);
return result;
}
EXPORT_SYMBOL(acpi_bus_start);
@ -1313,10 +1298,9 @@ static int acpi_bus_scan_fixed(struct acpi_device *root)
int result = 0;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_bus_scan_fixed");
if (!root)
return_VALUE(-ENODEV);
return -ENODEV;
/*
* Enumerate all fixed-feature devices.
@ -1337,7 +1321,7 @@ static int acpi_bus_scan_fixed(struct acpi_device *root)
result = acpi_start_single_object(device);
}
return_VALUE(result);
return result;
}
@ -1439,10 +1423,9 @@ static int __init acpi_scan_init(void)
int result;
struct acpi_bus_ops ops;
ACPI_FUNCTION_TRACE("acpi_scan_init");
if (acpi_disabled)
return_VALUE(0);
return 0;
kset_register(&acpi_namespace_kset);
@ -1487,7 +1470,7 @@ static int __init acpi_scan_init(void)
acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
Done:
return_VALUE(result);
return result;
}
subsys_initcall(acpi_scan_init);

18
drivers/acpi/system.c
View File

@ -47,10 +47,9 @@ extern struct fadt_descriptor acpi_fadt;
static int acpi_system_read_info(struct seq_file *seq, void *offset)
{
ACPI_FUNCTION_TRACE("acpi_system_read_info");
seq_printf(seq, "version: %x\n", ACPI_CA_VERSION);
return_VALUE(0);
return 0;
}
static int acpi_system_info_open_fs(struct inode *inode, struct file *file)
@ -80,17 +79,16 @@ acpi_system_read_dsdt(struct file *file,
struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL };
ssize_t res;
ACPI_FUNCTION_TRACE("acpi_system_read_dsdt");
status = acpi_get_table(ACPI_TABLE_ID_DSDT, 1, &dsdt);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
res = simple_read_from_buffer(buffer, count, ppos,
dsdt.pointer, dsdt.length);
acpi_os_free(dsdt.pointer);
return_VALUE(res);
return res;
}
static ssize_t acpi_system_read_fadt(struct file *, char __user *, size_t,
@ -108,17 +106,16 @@ acpi_system_read_fadt(struct file *file,
struct acpi_buffer fadt = { ACPI_ALLOCATE_BUFFER, NULL };
ssize_t res;
ACPI_FUNCTION_TRACE("acpi_system_read_fadt");
status = acpi_get_table(ACPI_TABLE_ID_FADT, 1, &fadt);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
res = simple_read_from_buffer(buffer, count, ppos,
fadt.pointer, fadt.length);
acpi_os_free(fadt.pointer);
return_VALUE(res);
return res;
}
static int __init acpi_system_init(void)
@ -127,10 +124,9 @@ static int __init acpi_system_init(void)
int error = 0;
char *name;
ACPI_FUNCTION_TRACE("acpi_system_init");
if (acpi_disabled)
return_VALUE(0);
return 0;
/* 'info' [R] */
name = ACPI_SYSTEM_FILE_INFO;
@ -158,7 +154,7 @@ static int __init acpi_system_init(void)
goto Error;
Done:
return_VALUE(error);
return error;
Error:
remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir);

170
drivers/acpi/thermal.c
View File

@ -222,51 +222,48 @@ static int acpi_thermal_get_temperature(struct acpi_thermal *tz)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE("acpi_thermal_get_temperature");
if (!tz)
return_VALUE(-EINVAL);
return -EINVAL;
tz->last_temperature = tz->temperature;
status =
acpi_evaluate_integer(tz->handle, "_TMP", NULL, &tz->temperature);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Temperature is %lu dK\n",
tz->temperature));
return_VALUE(0);
return 0;
}
static int acpi_thermal_get_polling_frequency(struct acpi_thermal *tz)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE("acpi_thermal_get_polling_frequency");
if (!tz)
return_VALUE(-EINVAL);
return -EINVAL;
status =
acpi_evaluate_integer(tz->handle, "_TZP", NULL,
&tz->polling_frequency);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Polling frequency is %lu dS\n",
tz->polling_frequency));
return_VALUE(0);
return 0;
}
static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds)
{
ACPI_FUNCTION_TRACE("acpi_thermal_set_polling");
if (!tz)
return_VALUE(-EINVAL);
return -EINVAL;
tz->polling_frequency = seconds * 10; /* Convert value to deci-seconds */
@ -274,7 +271,7 @@ static int acpi_thermal_set_polling(struct acpi_thermal *tz, int seconds)
"Polling frequency set to %lu seconds\n",
tz->polling_frequency));
return_VALUE(0);
return 0;
}
static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode)
@ -284,29 +281,28 @@ static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode)
struct acpi_object_list arg_list = { 1, &arg0 };
acpi_handle handle = NULL;
ACPI_FUNCTION_TRACE("acpi_thermal_set_cooling_mode");
if (!tz)
return_VALUE(-EINVAL);
return -EINVAL;
status = acpi_get_handle(tz->handle, "_SCP", &handle);
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n"));
return_VALUE(-ENODEV);
return -ENODEV;
}
arg0.integer.value = mode;
status = acpi_evaluate_object(handle, NULL, &arg_list, NULL);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
tz->cooling_mode = mode;
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Cooling mode [%s]\n",
mode ? "passive" : "active"));
return_VALUE(0);
return 0;
}
static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
@ -314,10 +310,9 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
acpi_status status = AE_OK;
int i = 0;
ACPI_FUNCTION_TRACE("acpi_thermal_get_trip_points");
if (!tz)
return_VALUE(-EINVAL);
return -EINVAL;
/* Critical Shutdown (required) */
@ -326,7 +321,7 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
if (ACPI_FAILURE(status)) {
tz->trips.critical.flags.valid = 0;
ACPI_EXCEPTION((AE_INFO, status, "No critical threshold"));
return_VALUE(-ENODEV);
return -ENODEV;
} else {
tz->trips.critical.flags.valid = 1;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@ -417,24 +412,23 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
"Invalid active threshold [%d]", i));
}
return_VALUE(0);
return 0;
}
static int acpi_thermal_get_devices(struct acpi_thermal *tz)
{
acpi_status status = AE_OK;
ACPI_FUNCTION_TRACE("acpi_thermal_get_devices");
if (!tz)
return_VALUE(-EINVAL);
return -EINVAL;
status =
acpi_evaluate_reference(tz->handle, "_TZD", NULL, &tz->devices);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
return_VALUE(0);
return 0;
}
static int acpi_thermal_call_usermode(char *path)
@ -442,10 +436,9 @@ static int acpi_thermal_call_usermode(char *path)
char *argv[2] = { NULL, NULL };
char *envp[3] = { NULL, NULL, NULL };
ACPI_FUNCTION_TRACE("acpi_thermal_call_usermode");
if (!path)
return_VALUE(-EINVAL);
return -EINVAL;
argv[0] = path;
@ -455,7 +448,7 @@ static int acpi_thermal_call_usermode(char *path)
call_usermodehelper(argv[0], argv, envp, 0);
return_VALUE(0);
return 0;
}
static int acpi_thermal_critical(struct acpi_thermal *tz)
@ -463,10 +456,9 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
int result = 0;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_thermal_critical");
if (!tz || !tz->trips.critical.flags.valid)
return_VALUE(-EINVAL);
return -EINVAL;
if (tz->temperature >= tz->trips.critical.temperature) {
printk(KERN_WARNING PREFIX "Critical trip point\n");
@ -476,7 +468,7 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
result = acpi_bus_get_device(tz->handle, &device);
if (result)
return_VALUE(result);
return result;
printk(KERN_EMERG
"Critical temperature reached (%ld C), shutting down.\n",
@ -486,7 +478,7 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
acpi_thermal_call_usermode(ACPI_THERMAL_PATH_POWEROFF);
return_VALUE(0);
return 0;
}
static int acpi_thermal_hot(struct acpi_thermal *tz)
@ -494,10 +486,9 @@ static int acpi_thermal_hot(struct acpi_thermal *tz)
int result = 0;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_thermal_hot");
if (!tz || !tz->trips.hot.flags.valid)
return_VALUE(-EINVAL);
return -EINVAL;
if (tz->temperature >= tz->trips.hot.temperature) {
printk(KERN_WARNING PREFIX "Hot trip point\n");
@ -507,14 +498,14 @@ static int acpi_thermal_hot(struct acpi_thermal *tz)
result = acpi_bus_get_device(tz->handle, &device);
if (result)
return_VALUE(result);
return result;
acpi_bus_generate_event(device, ACPI_THERMAL_NOTIFY_HOT,
tz->trips.hot.flags.enabled);
/* TBD: Call user-mode "sleep(S4)" function */
return_VALUE(0);
return 0;
}
static void acpi_thermal_passive(struct acpi_thermal *tz)
@ -524,7 +515,6 @@ static void acpi_thermal_passive(struct acpi_thermal *tz)
int trend = 0;
int i = 0;
ACPI_FUNCTION_TRACE("acpi_thermal_passive");
if (!tz || !tz->trips.passive.flags.valid)
return;
@ -613,7 +603,6 @@ static void acpi_thermal_active(struct acpi_thermal *tz)
int j = 0;
unsigned long maxtemp = 0;
ACPI_FUNCTION_TRACE("acpi_thermal_active");
if (!tz)
return;
@ -695,18 +684,17 @@ static void acpi_thermal_check(void *data)
int i = 0;
struct acpi_thermal_state state;
ACPI_FUNCTION_TRACE("acpi_thermal_check");
if (!tz) {
printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
return_VOID;
return;
}
state = tz->state;
result = acpi_thermal_get_temperature(tz);
if (result)
return_VOID;
return;
memset(&tz->state, 0, sizeof(tz->state));
@ -795,7 +783,7 @@ static void acpi_thermal_check(void *data)
}
}
return_VOID;
return;
}
/* --------------------------------------------------------------------------
@ -808,7 +796,6 @@ static int acpi_thermal_state_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_thermal *tz = (struct acpi_thermal *)seq->private;
ACPI_FUNCTION_TRACE("acpi_thermal_state_seq_show");
if (!tz)
goto end;
@ -831,7 +818,7 @@ static int acpi_thermal_state_seq_show(struct seq_file *seq, void *offset)
}
end:
return_VALUE(0);
return 0;
}
static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file)
@ -844,7 +831,6 @@ static int acpi_thermal_temp_seq_show(struct seq_file *seq, void *offset)
int result = 0;
struct acpi_thermal *tz = (struct acpi_thermal *)seq->private;
ACPI_FUNCTION_TRACE("acpi_thermal_temp_seq_show");
if (!tz)
goto end;
@ -857,7 +843,7 @@ static int acpi_thermal_temp_seq_show(struct seq_file *seq, void *offset)
KELVIN_TO_CELSIUS(tz->temperature));
end:
return_VALUE(0);
return 0;
}
static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file)
@ -871,7 +857,6 @@ static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
int i = 0;
int j = 0;
ACPI_FUNCTION_TRACE("acpi_thermal_trip_seq_show");
if (!tz)
goto end;
@ -911,7 +896,7 @@ static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
}
end:
return_VALUE(0);
return 0;
}
static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file)
@ -932,18 +917,17 @@ acpi_thermal_write_trip_points(struct file *file,
int *active;
int i = 0;
ACPI_FUNCTION_TRACE("acpi_thermal_write_trip_points");
limit_string = kmalloc(ACPI_THERMAL_MAX_LIMIT_STR_LEN, GFP_KERNEL);
if (!limit_string)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(limit_string, 0, ACPI_THERMAL_MAX_LIMIT_STR_LEN);
active = kmalloc(ACPI_THERMAL_MAX_ACTIVE * sizeof(int), GFP_KERNEL);
if (!active) {
kfree(limit_string);
return_VALUE(-ENOMEM);
return -ENOMEM;
}
if (!tz || (count > ACPI_THERMAL_MAX_LIMIT_STR_LEN - 1)) {
@ -980,14 +964,13 @@ acpi_thermal_write_trip_points(struct file *file,
end:
kfree(active);
kfree(limit_string);
return_VALUE(count);
return count;
}
static int acpi_thermal_cooling_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_thermal *tz = (struct acpi_thermal *)seq->private;
ACPI_FUNCTION_TRACE("acpi_thermal_cooling_seq_show");
if (!tz)
goto end;
@ -1003,7 +986,7 @@ static int acpi_thermal_cooling_seq_show(struct seq_file *seq, void *offset)
tz->cooling_mode ? "passive" : "active");
end:
return_VALUE(0);
return 0;
}
static int acpi_thermal_cooling_open_fs(struct inode *inode, struct file *file)
@ -1022,16 +1005,15 @@ acpi_thermal_write_cooling_mode(struct file *file,
int result = 0;
char mode_string[12] = { '\0' };
ACPI_FUNCTION_TRACE("acpi_thermal_write_cooling_mode");
if (!tz || (count > sizeof(mode_string) - 1))
return_VALUE(-EINVAL);
return -EINVAL;
if (!tz->flags.cooling_mode)
return_VALUE(-ENODEV);
return -ENODEV;
if (copy_from_user(mode_string, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
mode_string[count] = '\0';
@ -1039,18 +1021,17 @@ acpi_thermal_write_cooling_mode(struct file *file,
simple_strtoul(mode_string, NULL,
0));
if (result)
return_VALUE(result);
return result;
acpi_thermal_check(tz);
return_VALUE(count);
return count;
}
static int acpi_thermal_polling_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_thermal *tz = (struct acpi_thermal *)seq->private;
ACPI_FUNCTION_TRACE("acpi_thermal_polling_seq_show");
if (!tz)
goto end;
@ -1064,7 +1045,7 @@ static int acpi_thermal_polling_seq_show(struct seq_file *seq, void *offset)
(tz->polling_frequency / 10));
end:
return_VALUE(0);
return 0;
}
static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file)
@ -1084,13 +1065,12 @@ acpi_thermal_write_polling(struct file *file,
char polling_string[12] = { '\0' };
int seconds = 0;
ACPI_FUNCTION_TRACE("acpi_thermal_write_polling");
if (!tz || (count > sizeof(polling_string) - 1))
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(polling_string, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
polling_string[count] = '\0';
@ -1098,24 +1078,23 @@ acpi_thermal_write_polling(struct file *file,
result = acpi_thermal_set_polling(tz, seconds);
if (result)
return_VALUE(result);
return result;
acpi_thermal_check(tz);
return_VALUE(count);
return count;
}
static int acpi_thermal_add_fs(struct acpi_device *device)
{
struct proc_dir_entry *entry = NULL;
ACPI_FUNCTION_TRACE("acpi_thermal_add_fs");
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_thermal_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
}
@ -1123,7 +1102,7 @@ static int acpi_thermal_add_fs(struct acpi_device *device)
entry = create_proc_entry(ACPI_THERMAL_FILE_STATE,
S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_thermal_state_fops;
entry->data = acpi_driver_data(device);
@ -1134,7 +1113,7 @@ static int acpi_thermal_add_fs(struct acpi_device *device)
entry = create_proc_entry(ACPI_THERMAL_FILE_TEMPERATURE,
S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_thermal_temp_fops;
entry->data = acpi_driver_data(device);
@ -1146,7 +1125,7 @@ static int acpi_thermal_add_fs(struct acpi_device *device)
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_thermal_trip_fops;
entry->data = acpi_driver_data(device);
@ -1158,7 +1137,7 @@ static int acpi_thermal_add_fs(struct acpi_device *device)
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_thermal_cooling_fops;
entry->data = acpi_driver_data(device);
@ -1170,19 +1149,18 @@ static int acpi_thermal_add_fs(struct acpi_device *device)
S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_thermal_polling_fops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_thermal_remove_fs(struct acpi_device *device)
{
ACPI_FUNCTION_TRACE("acpi_thermal_remove_fs");
if (acpi_device_dir(device)) {
remove_proc_entry(ACPI_THERMAL_FILE_POLLING_FREQ,
@ -1199,7 +1177,7 @@ static int acpi_thermal_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
@ -1211,13 +1189,12 @@ static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
struct acpi_thermal *tz = (struct acpi_thermal *)data;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_thermal_notify");
if (!tz)
return_VOID;
return;
if (acpi_bus_get_device(tz->handle, &device))
return_VOID;
return;
switch (event) {
case ACPI_THERMAL_NOTIFY_TEMPERATURE:
@ -1239,27 +1216,26 @@ static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static int acpi_thermal_get_info(struct acpi_thermal *tz)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_thermal_get_info");
if (!tz)
return_VALUE(-EINVAL);
return -EINVAL;
/* Get temperature [_TMP] (required) */
result = acpi_thermal_get_temperature(tz);
if (result)
return_VALUE(result);
return result;
/* Get trip points [_CRT, _PSV, etc.] (required) */
result = acpi_thermal_get_trip_points(tz);
if (result)
return_VALUE(result);
return result;
/* Set the cooling mode [_SCP] to active cooling (default) */
result = acpi_thermal_set_cooling_mode(tz, ACPI_THERMAL_MODE_ACTIVE);
@ -1299,7 +1275,7 @@ static int acpi_thermal_get_info(struct acpi_thermal *tz)
if (!result)
tz->flags.devices = 1;
return_VALUE(0);
return 0;
}
static int acpi_thermal_add(struct acpi_device *device)
@ -1308,14 +1284,13 @@ static int acpi_thermal_add(struct acpi_device *device)
acpi_status status = AE_OK;
struct acpi_thermal *tz = NULL;
ACPI_FUNCTION_TRACE("acpi_thermal_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
tz = kmalloc(sizeof(struct acpi_thermal), GFP_KERNEL);
if (!tz)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(tz, 0, sizeof(struct acpi_thermal));
tz->handle = device->handle;
@ -1354,7 +1329,7 @@ static int acpi_thermal_add(struct acpi_device *device)
kfree(tz);
}
return_VALUE(result);
return result;
}
static int acpi_thermal_remove(struct acpi_device *device, int type)
@ -1362,10 +1337,9 @@ static int acpi_thermal_remove(struct acpi_device *device, int type)
acpi_status status = AE_OK;
struct acpi_thermal *tz = NULL;
ACPI_FUNCTION_TRACE("acpi_thermal_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
tz = (struct acpi_thermal *)acpi_driver_data(device);
@ -1396,7 +1370,7 @@ static int acpi_thermal_remove(struct acpi_device *device, int type)
acpi_thermal_remove_fs(device);
kfree(tz);
return_VALUE(0);
return 0;
}
static int acpi_thermal_resume(struct acpi_device *device, int state)
@ -1404,7 +1378,7 @@ static int acpi_thermal_resume(struct acpi_device *device, int state)
struct acpi_thermal *tz = NULL;
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
tz = (struct acpi_thermal *)acpi_driver_data(device);
@ -1417,31 +1391,29 @@ static int __init acpi_thermal_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_thermal_init");
acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir);
if (!acpi_thermal_dir)
return_VALUE(-ENODEV);
return -ENODEV;
acpi_thermal_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_thermal_driver);
if (result < 0) {
remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_thermal_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_thermal_exit");
acpi_bus_unregister_driver(&acpi_thermal_driver);
remove_proc_entry(ACPI_THERMAL_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_thermal_init);

54
drivers/acpi/utils.c
View File

@ -58,22 +58,21 @@ acpi_extract_package(union acpi_object *package,
u8 *head = NULL;
u8 *tail = NULL;
ACPI_FUNCTION_TRACE("acpi_extract_package");
if (!package || (package->type != ACPI_TYPE_PACKAGE)
|| (package->package.count < 1)) {
printk(KERN_WARNING PREFIX "Invalid package argument\n");
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
}
if (!format || !format->pointer || (format->length < 1)) {
printk(KERN_WARNING PREFIX "Invalid format argument\n");
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
}
if (!buffer) {
printk(KERN_WARNING PREFIX "Invalid buffer argument\n");
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
}
format_count = (format->length / sizeof(char)) - 1;
@ -81,7 +80,7 @@ acpi_extract_package(union acpi_object *package,
printk(KERN_WARNING PREFIX "Format specifies more objects [%d]"
" than exist in package [%d].\n",
format_count, package->package.count);
return_ACPI_STATUS(AE_BAD_DATA);
return AE_BAD_DATA;
}
format_string = (char *)format->pointer;
@ -94,7 +93,7 @@ acpi_extract_package(union acpi_object *package,
union acpi_object *element = &(package->package.elements[i]);
if (!element) {
return_ACPI_STATUS(AE_BAD_DATA);
return AE_BAD_DATA;
}
switch (element->type) {
@ -116,7 +115,7 @@ acpi_extract_package(union acpi_object *package,
" [%d]: got number, expecing"
" [%c]\n",
i, format_string[i]);
return_ACPI_STATUS(AE_BAD_DATA);
return AE_BAD_DATA;
break;
}
break;
@ -142,7 +141,7 @@ acpi_extract_package(union acpi_object *package,
" [%d] got string/buffer,"
" expecing [%c]\n",
i, format_string[i]);
return_ACPI_STATUS(AE_BAD_DATA);
return AE_BAD_DATA;
break;
}
break;
@ -153,7 +152,7 @@ acpi_extract_package(union acpi_object *package,
"Found unsupported element at index=%d\n",
i));
/* TBD: handle nested packages... */
return_ACPI_STATUS(AE_SUPPORT);
return AE_SUPPORT;
break;
}
}
@ -163,9 +162,9 @@ acpi_extract_package(union acpi_object *package,
*/
if (buffer->length < size_required) {
buffer->length = size_required;
return_ACPI_STATUS(AE_BUFFER_OVERFLOW);
return AE_BUFFER_OVERFLOW;
} else if (buffer->length != size_required || !buffer->pointer) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
}
head = buffer->pointer;
@ -180,7 +179,7 @@ acpi_extract_package(union acpi_object *package,
union acpi_object *element = &(package->package.elements[i]);
if (!element) {
return_ACPI_STATUS(AE_BAD_DATA);
return AE_BAD_DATA;
}
switch (element->type) {
@ -245,7 +244,7 @@ acpi_extract_package(union acpi_object *package,
}
}
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
EXPORT_SYMBOL(acpi_extract_package);
@ -259,14 +258,13 @@ acpi_evaluate_integer(acpi_handle handle,
union acpi_object *element;
struct acpi_buffer buffer = { 0, NULL };
ACPI_FUNCTION_TRACE("acpi_evaluate_integer");
if (!data)
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
element = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
if (!element)
return_ACPI_STATUS(AE_NO_MEMORY);
return AE_NO_MEMORY;
memset(element, 0, sizeof(union acpi_object));
buffer.length = sizeof(union acpi_object);
@ -275,13 +273,13 @@ acpi_evaluate_integer(acpi_handle handle,
if (ACPI_FAILURE(status)) {
acpi_util_eval_error(handle, pathname, status);
kfree(element);
return_ACPI_STATUS(status);
return status;
}
if (element->type != ACPI_TYPE_INTEGER) {
acpi_util_eval_error(handle, pathname, AE_BAD_DATA);
kfree(element);
return_ACPI_STATUS(AE_BAD_DATA);
return AE_BAD_DATA;
}
*data = element->integer.value;
@ -289,7 +287,7 @@ acpi_evaluate_integer(acpi_handle handle,
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%lu]\n", *data));
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
EXPORT_SYMBOL(acpi_evaluate_integer);
@ -304,15 +302,14 @@ acpi_evaluate_string(acpi_handle handle,
acpi_object *element = NULL;
acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
ACPI_FUNCTION_TRACE("acpi_evaluate_string");
if (!data)
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
status = acpi_evaluate_object(handle, pathname, arguments, &buffer);
if (ACPI_FAILURE(status)) {
acpi_util_eval_error(handle, pathname, status);
return_ACPI_STATUS(status);
return status;
}
element = (acpi_object *) buffer.pointer;
@ -321,13 +318,13 @@ acpi_evaluate_string(acpi_handle handle,
|| (element->type != ACPI_TYPE_BUFFER)
|| !element->string.length) {
acpi_util_eval_error(handle, pathname, AE_BAD_DATA);
return_ACPI_STATUS(AE_BAD_DATA);
return AE_BAD_DATA;
}
*data = kmalloc(element->string.length + 1, GFP_KERNEL);
if (!data) {
printk(KERN_ERR PREFIX "Memory allocation\n");
return_VALUE(-ENOMEM);
return -ENOMEM;
}
memset(*data, 0, element->string.length + 1);
@ -337,7 +334,7 @@ acpi_evaluate_string(acpi_handle handle,
acpi_os_free(buffer.pointer);
return_ACPI_STATUS(AE_OK);
return AE_OK;
}
#endif
@ -353,10 +350,9 @@ acpi_evaluate_reference(acpi_handle handle,
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
u32 i = 0;
ACPI_FUNCTION_TRACE("acpi_evaluate_reference");
if (!list) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
return AE_BAD_PARAMETER;
}
/* Evaluate object. */
@ -390,7 +386,7 @@ acpi_evaluate_reference(acpi_handle handle,
}
if (package->package.count > ACPI_MAX_HANDLES) {
return_ACPI_STATUS(AE_NO_MEMORY);
return AE_NO_MEMORY;
}
list->count = package->package.count;
@ -424,7 +420,7 @@ acpi_evaluate_reference(acpi_handle handle,
acpi_os_free(buffer.pointer);
return_ACPI_STATUS(status);
return status;
}
EXPORT_SYMBOL(acpi_evaluate_reference);

238
drivers/acpi/video.c
View File

@ -272,10 +272,9 @@ static int
acpi_video_device_query(struct acpi_video_device *device, unsigned long *state)
{
int status;
ACPI_FUNCTION_TRACE("acpi_video_device_query");
status = acpi_evaluate_integer(device->handle, "_DGS", NULL, state);
return_VALUE(status);
return status;
}
static int
@ -284,11 +283,10 @@ acpi_video_device_get_state(struct acpi_video_device *device,
{
int status;
ACPI_FUNCTION_TRACE("acpi_video_device_get_state");
status = acpi_evaluate_integer(device->handle, "_DCS", NULL, state);
return_VALUE(status);
return status;
}
static int
@ -299,12 +297,11 @@ acpi_video_device_set_state(struct acpi_video_device *device, int state)
struct acpi_object_list args = { 1, &arg0 };
unsigned long ret;
ACPI_FUNCTION_TRACE("acpi_video_device_set_state");
arg0.integer.value = state;
status = acpi_evaluate_integer(device->handle, "_DSS", &args, &ret);
return_VALUE(status);
return status;
}
static int
@ -315,13 +312,12 @@ acpi_video_device_lcd_query_levels(struct acpi_video_device *device,
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
ACPI_FUNCTION_TRACE("acpi_video_device_lcd_query_levels");
*levels = NULL;
status = acpi_evaluate_object(device->handle, "_BCL", NULL, &buffer);
if (!ACPI_SUCCESS(status))
return_VALUE(status);
return status;
obj = (union acpi_object *)buffer.pointer;
if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) {
printk(KERN_ERR PREFIX "Invalid _BCL data\n");
@ -331,12 +327,12 @@ acpi_video_device_lcd_query_levels(struct acpi_video_device *device,
*levels = obj;
return_VALUE(0);
return 0;
err:
kfree(buffer.pointer);
return_VALUE(status);
return status;
}
static int
@ -346,13 +342,12 @@ acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list args = { 1, &arg0 };
ACPI_FUNCTION_TRACE("acpi_video_device_lcd_set_level");
arg0.integer.value = level;
status = acpi_evaluate_object(device->handle, "_BCM", &args, NULL);
printk(KERN_DEBUG "set_level status: %x\n", status);
return_VALUE(status);
return status;
}
static int
@ -360,11 +355,10 @@ acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
unsigned long *level)
{
int status;
ACPI_FUNCTION_TRACE("acpi_video_device_lcd_get_level_current");
status = acpi_evaluate_integer(device->handle, "_BQC", NULL, level);
return_VALUE(status);
return status;
}
static int
@ -377,22 +371,21 @@ acpi_video_device_EDID(struct acpi_video_device *device,
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list args = { 1, &arg0 };
ACPI_FUNCTION_TRACE("acpi_video_device_get_EDID");
*edid = NULL;
if (!device)
return_VALUE(-ENODEV);
return -ENODEV;
if (length == 128)
arg0.integer.value = 1;
else if (length == 256)
arg0.integer.value = 2;
else
return_VALUE(-EINVAL);
return -EINVAL;
status = acpi_evaluate_object(device->handle, "_DDC", &args, &buffer);
if (ACPI_FAILURE(status))
return_VALUE(-ENODEV);
return -ENODEV;
obj = (union acpi_object *)buffer.pointer;
@ -404,7 +397,7 @@ acpi_video_device_EDID(struct acpi_video_device *device,
kfree(obj);
}
return_VALUE(status);
return status;
}
/* bus */
@ -417,7 +410,6 @@ acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option)
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list args = { 1, &arg0 };
ACPI_FUNCTION_TRACE("acpi_video_bus_set_POST");
arg0.integer.value = option;
@ -425,7 +417,7 @@ acpi_video_bus_set_POST(struct acpi_video_bus *video, unsigned long option)
if (ACPI_SUCCESS(status))
status = tmp ? (-EINVAL) : (AE_OK);
return_VALUE(status);
return status;
}
static int
@ -433,11 +425,10 @@ acpi_video_bus_get_POST(struct acpi_video_bus *video, unsigned long *id)
{
int status;
ACPI_FUNCTION_TRACE("acpi_video_bus_get_POST");
status = acpi_evaluate_integer(video->handle, "_GPD", NULL, id);
return_VALUE(status);
return status;
}
static int
@ -445,12 +436,11 @@ acpi_video_bus_POST_options(struct acpi_video_bus *video,
unsigned long *options)
{
int status;
ACPI_FUNCTION_TRACE("acpi_video_bus_POST_options");
status = acpi_evaluate_integer(video->handle, "_VPO", NULL, options);
*options &= 3;
return_VALUE(status);
return status;
}
/*
@ -481,7 +471,6 @@ acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag)
union acpi_object arg0 = { ACPI_TYPE_INTEGER };
struct acpi_object_list args = { 1, &arg0 };
ACPI_FUNCTION_TRACE("acpi_video_bus_DOS");
if (bios_flag < 0 || bios_flag > 3 || lcd_flag < 0 || lcd_flag > 1) {
status = -1;
@ -492,7 +481,7 @@ acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag)
acpi_evaluate_object(video->handle, "_DOS", &args, NULL);
Failed:
return_VALUE(status);
return status;
}
/*
@ -514,7 +503,6 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
union acpi_object *obj = NULL;
struct acpi_video_device_brightness *br = NULL;
ACPI_FUNCTION_TRACE("acpi_video_device_find_cap");
memset(&device->cap, 0, 4);
@ -582,7 +570,7 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
kfree(obj);
return_VOID;
return;
}
/*
@ -629,10 +617,9 @@ static int acpi_video_bus_check(struct acpi_video_bus *video)
{
acpi_status status = -ENOENT;
ACPI_FUNCTION_TRACE("acpi_video_bus_check");
if (!video)
return_VALUE(-EINVAL);
return -EINVAL;
/* Since there is no HID, CID and so on for VGA driver, we have
* to check well known required nodes.
@ -656,7 +643,7 @@ static int acpi_video_bus_check(struct acpi_video_bus *video)
status = 0;
}
return_VALUE(status);
return status;
}
/* --------------------------------------------------------------------------
@ -672,7 +659,6 @@ static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset)
struct acpi_video_device *dev =
(struct acpi_video_device *)seq->private;
ACPI_FUNCTION_TRACE("acpi_video_device_info_seq_show");
if (!dev)
goto end;
@ -691,7 +677,7 @@ static int acpi_video_device_info_seq_show(struct seq_file *seq, void *offset)
seq_printf(seq, "known by bios: %s\n", dev->flags.bios ? "yes" : "no");
end:
return_VALUE(0);
return 0;
}
static int
@ -708,7 +694,6 @@ static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset)
(struct acpi_video_device *)seq->private;
unsigned long state;
ACPI_FUNCTION_TRACE("acpi_video_device_state_seq_show");
if (!dev)
goto end;
@ -728,7 +713,7 @@ static int acpi_video_device_state_seq_show(struct seq_file *seq, void *offset)
seq_printf(seq, "<not supported>\n");
end:
return_VALUE(0);
return 0;
}
static int
@ -749,13 +734,12 @@ acpi_video_device_write_state(struct file *file,
char str[12] = { 0 };
u32 state = 0;
ACPI_FUNCTION_TRACE("acpi_video_device_write_state");
if (!dev || count + 1 > sizeof str)
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(str, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
str[count] = 0;
state = simple_strtoul(str, NULL, 0);
@ -764,9 +748,9 @@ acpi_video_device_write_state(struct file *file,
status = acpi_video_device_set_state(dev, state);
if (status)
return_VALUE(-EFAULT);
return -EFAULT;
return_VALUE(count);
return count;
}
static int
@ -776,11 +760,10 @@ acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset)
(struct acpi_video_device *)seq->private;
int i;
ACPI_FUNCTION_TRACE("acpi_video_device_brightness_seq_show");
if (!dev || !dev->brightness) {
seq_printf(seq, "<not supported>\n");
return_VALUE(0);
return 0;
}
seq_printf(seq, "levels: ");
@ -788,7 +771,7 @@ acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset)
seq_printf(seq, " %d", dev->brightness->levels[i]);
seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr);
return_VALUE(0);
return 0;
}
static int
@ -809,19 +792,18 @@ acpi_video_device_write_brightness(struct file *file,
unsigned int level = 0;
int i;
ACPI_FUNCTION_TRACE("acpi_video_device_write_brightness");
if (!dev || !dev->brightness || count + 1 > sizeof str)
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(str, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
str[count] = 0;
level = simple_strtoul(str, NULL, 0);
if (level > 100)
return_VALUE(-EFAULT);
return -EFAULT;
/* validate though the list of available levels */
for (i = 0; i < dev->brightness->count; i++)
@ -832,7 +814,7 @@ acpi_video_device_write_brightness(struct file *file,
break;
}
return_VALUE(count);
return count;
}
static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset)
@ -843,7 +825,6 @@ static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset)
int i;
union acpi_object *edid = NULL;
ACPI_FUNCTION_TRACE("acpi_video_device_EDID_seq_show");
if (!dev)
goto out;
@ -868,7 +849,7 @@ static int acpi_video_device_EDID_seq_show(struct seq_file *seq, void *offset)
else
kfree(edid);
return_VALUE(0);
return 0;
}
static int
@ -883,27 +864,26 @@ static int acpi_video_device_add_fs(struct acpi_device *device)
struct proc_dir_entry *entry = NULL;
struct acpi_video_device *vid_dev;
ACPI_FUNCTION_TRACE("acpi_video_device_add_fs");
if (!device)
return_VALUE(-ENODEV);
return -ENODEV;
vid_dev = (struct acpi_video_device *)acpi_driver_data(device);
if (!vid_dev)
return_VALUE(-ENODEV);
return -ENODEV;
if (!acpi_device_dir(device)) {
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
vid_dev->video->dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
acpi_device_dir(device)->owner = THIS_MODULE;
}
/* 'info' [R] */
entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_video_device_info_fops;
entry->data = acpi_driver_data(device);
@ -915,7 +895,7 @@ static int acpi_video_device_add_fs(struct acpi_device *device)
create_proc_entry("state", S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
acpi_video_device_state_fops.write = acpi_video_device_write_state;
entry->proc_fops = &acpi_video_device_state_fops;
@ -928,7 +908,7 @@ static int acpi_video_device_add_fs(struct acpi_device *device)
create_proc_entry("brightness", S_IFREG | S_IRUGO | S_IWUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
acpi_video_device_brightness_fops.write = acpi_video_device_write_brightness;
entry->proc_fops = &acpi_video_device_brightness_fops;
@ -939,24 +919,23 @@ static int acpi_video_device_add_fs(struct acpi_device *device)
/* 'EDID' [R] */
entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_video_device_EDID_fops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_video_device_remove_fs(struct acpi_device *device)
{
struct acpi_video_device *vid_dev;
ACPI_FUNCTION_TRACE("acpi_video_device_remove_fs");
vid_dev = (struct acpi_video_device *)acpi_driver_data(device);
if (!vid_dev || !vid_dev->video || !vid_dev->video->dir)
return_VALUE(-ENODEV);
return -ENODEV;
if (acpi_device_dir(device)) {
remove_proc_entry("info", acpi_device_dir(device));
@ -967,7 +946,7 @@ static int acpi_video_device_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* video bus */
@ -975,7 +954,6 @@ static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private;
ACPI_FUNCTION_TRACE("acpi_video_bus_info_seq_show");
if (!video)
goto end;
@ -988,7 +966,7 @@ static int acpi_video_bus_info_seq_show(struct seq_file *seq, void *offset)
video->flags.post ? "yes" : "no");
end:
return_VALUE(0);
return 0;
}
static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file)
@ -1001,7 +979,6 @@ static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private;
ACPI_FUNCTION_TRACE("acpi_video_bus_ROM_seq_show");
if (!video)
goto end;
@ -1010,7 +987,7 @@ static int acpi_video_bus_ROM_seq_show(struct seq_file *seq, void *offset)
seq_printf(seq, "<TODO>\n");
end:
return_VALUE(0);
return 0;
}
static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file)
@ -1024,7 +1001,6 @@ static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset)
unsigned long options;
int status;
ACPI_FUNCTION_TRACE("acpi_video_bus_POST_info_seq_show");
if (!video)
goto end;
@ -1047,7 +1023,7 @@ static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset)
} else
seq_printf(seq, "<not supported>\n");
end:
return_VALUE(0);
return 0;
}
static int
@ -1063,7 +1039,6 @@ static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset)
int status;
unsigned long id;
ACPI_FUNCTION_TRACE("acpi_video_bus_POST_seq_show");
if (!video)
goto end;
@ -1076,18 +1051,17 @@ static int acpi_video_bus_POST_seq_show(struct seq_file *seq, void *offset)
seq_printf(seq, "device posted is <%s>\n", device_decode[id & 3]);
end:
return_VALUE(0);
return 0;
}
static int acpi_video_bus_DOS_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_video_bus *video = (struct acpi_video_bus *)seq->private;
ACPI_FUNCTION_TRACE("acpi_video_bus_DOS_seq_show");
seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting);
return_VALUE(0);
return 0;
}
static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file)
@ -1112,22 +1086,21 @@ acpi_video_bus_write_POST(struct file *file,
char str[12] = { 0 };
unsigned long opt, options;
ACPI_FUNCTION_TRACE("acpi_video_bus_write_POST");
if (!video || count + 1 > sizeof str)
return_VALUE(-EINVAL);
return -EINVAL;
status = acpi_video_bus_POST_options(video, &options);
if (!ACPI_SUCCESS(status))
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(str, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
str[count] = 0;
opt = strtoul(str, NULL, 0);
if (opt > 3)
return_VALUE(-EFAULT);
return -EFAULT;
/* just in case an OEM 'forget' the motherboard... */
options |= 1;
@ -1135,11 +1108,11 @@ acpi_video_bus_write_POST(struct file *file,
if (options & (1ul << opt)) {
status = acpi_video_bus_set_POST(video, opt);
if (!ACPI_SUCCESS(status))
return_VALUE(-EFAULT);
return -EFAULT;
}
return_VALUE(count);
return count;
}
static ssize_t
@ -1153,25 +1126,24 @@ acpi_video_bus_write_DOS(struct file *file,
char str[12] = { 0 };
unsigned long opt;
ACPI_FUNCTION_TRACE("acpi_video_bus_write_DOS");
if (!video || count + 1 > sizeof str)
return_VALUE(-EINVAL);
return -EINVAL;
if (copy_from_user(str, buffer, count))
return_VALUE(-EFAULT);
return -EFAULT;
str[count] = 0;
opt = strtoul(str, NULL, 0);
if (opt > 7)
return_VALUE(-EFAULT);
return -EFAULT;
status = acpi_video_bus_DOS(video, opt & 0x3, (opt & 0x4) >> 2);
if (!ACPI_SUCCESS(status))
return_VALUE(-EFAULT);
return -EFAULT;
return_VALUE(count);
return count;
}
static int acpi_video_bus_add_fs(struct acpi_device *device)
@ -1179,7 +1151,6 @@ static int acpi_video_bus_add_fs(struct acpi_device *device)
struct proc_dir_entry *entry = NULL;
struct acpi_video_bus *video;
ACPI_FUNCTION_TRACE("acpi_video_bus_add_fs");
video = (struct acpi_video_bus *)acpi_driver_data(device);
@ -1187,7 +1158,7 @@ static int acpi_video_bus_add_fs(struct acpi_device *device)
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
acpi_video_dir);
if (!acpi_device_dir(device))
return_VALUE(-ENODEV);
return -ENODEV;
video->dir = acpi_device_dir(device);
acpi_device_dir(device)->owner = THIS_MODULE;
}
@ -1195,7 +1166,7 @@ static int acpi_video_bus_add_fs(struct acpi_device *device)
/* 'info' [R] */
entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_video_bus_info_fops;
entry->data = acpi_driver_data(device);
@ -1205,7 +1176,7 @@ static int acpi_video_bus_add_fs(struct acpi_device *device)
/* 'ROM' [R] */
entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_video_bus_ROM_fops;
entry->data = acpi_driver_data(device);
@ -1216,7 +1187,7 @@ static int acpi_video_bus_add_fs(struct acpi_device *device)
entry =
create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
entry->proc_fops = &acpi_video_bus_POST_info_fops;
entry->data = acpi_driver_data(device);
@ -1228,7 +1199,7 @@ static int acpi_video_bus_add_fs(struct acpi_device *device)
create_proc_entry("POST", S_IFREG | S_IRUGO | S_IRUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
acpi_video_bus_POST_fops.write = acpi_video_bus_write_POST;
entry->proc_fops = &acpi_video_bus_POST_fops;
@ -1241,7 +1212,7 @@ static int acpi_video_bus_add_fs(struct acpi_device *device)
create_proc_entry("DOS", S_IFREG | S_IRUGO | S_IRUSR,
acpi_device_dir(device));
if (!entry)
return_VALUE(-ENODEV);
return -ENODEV;
else {
acpi_video_bus_DOS_fops.write = acpi_video_bus_write_DOS;
entry->proc_fops = &acpi_video_bus_DOS_fops;
@ -1249,14 +1220,13 @@ static int acpi_video_bus_add_fs(struct acpi_device *device)
entry->owner = THIS_MODULE;
}
return_VALUE(0);
return 0;
}
static int acpi_video_bus_remove_fs(struct acpi_device *device)
{
struct acpi_video_bus *video;
ACPI_FUNCTION_TRACE("acpi_video_bus_remove_fs");
video = (struct acpi_video_bus *)acpi_driver_data(device);
@ -1270,7 +1240,7 @@ static int acpi_video_bus_remove_fs(struct acpi_device *device)
acpi_device_dir(device) = NULL;
}
return_VALUE(0);
return 0;
}
/* --------------------------------------------------------------------------
@ -1287,10 +1257,9 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
int status;
struct acpi_video_device *data;
ACPI_FUNCTION_TRACE("acpi_video_bus_get_one_device");
if (!device || !video)
return_VALUE(-EINVAL);
return -EINVAL;
status =
acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);
@ -1298,7 +1267,7 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
data = kmalloc(sizeof(struct acpi_video_device), GFP_KERNEL);
if (!data)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(data, 0, sizeof(struct acpi_video_device));
@ -1349,10 +1318,10 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
acpi_video_device_add_fs(device);
return_VALUE(0);
return 0;
}
return_VALUE(-ENOENT);
return -ENOENT;
}
/*
@ -1395,7 +1364,6 @@ acpi_video_device_bind(struct acpi_video_bus *video,
struct acpi_video_device *device)
{
int i;
ACPI_FUNCTION_TRACE("acpi_video_device_bind");
#define IDS_VAL(i) video->attached_array[i].value.int_val
#define IDS_BIND(i) video->attached_array[i].bind_info
@ -1432,12 +1400,11 @@ static int acpi_video_device_enumerate(struct acpi_video_bus *video)
union acpi_object *dod = NULL;
union acpi_object *obj;
ACPI_FUNCTION_TRACE("acpi_video_device_enumerate");
status = acpi_evaluate_object(video->handle, "_DOD", NULL, &buffer);
if (!ACPI_SUCCESS(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD"));
return_VALUE(status);
return status;
}
dod = (union acpi_object *)buffer.pointer;
@ -1484,7 +1451,7 @@ static int acpi_video_device_enumerate(struct acpi_video_bus *video)
video->attached_count = count;
out:
acpi_os_free(buffer.pointer);
return_VALUE(status);
return status;
}
/*
@ -1509,7 +1476,6 @@ static int acpi_video_switch_output(struct acpi_video_bus *video, int event)
unsigned long state;
int status = 0;
ACPI_FUNCTION_TRACE("acpi_video_switch_output");
list_for_each_safe(node, next, &video->video_device_list) {
dev = container_of(node, struct acpi_video_device, entry);
@ -1540,7 +1506,7 @@ static int acpi_video_switch_output(struct acpi_video_bus *video, int event)
break;
}
return_VALUE(status);
return status;
}
static int
@ -1567,7 +1533,6 @@ acpi_video_bus_get_devices(struct acpi_video_bus *video,
int status = 0;
struct list_head *node, *next;
ACPI_FUNCTION_TRACE("acpi_video_get_devices");
acpi_video_device_enumerate(video);
@ -1585,7 +1550,7 @@ acpi_video_bus_get_devices(struct acpi_video_bus *video,
}
}
return_VALUE(status);
return status;
}
static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
@ -1593,10 +1558,9 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
acpi_status status;
struct acpi_video_bus *video;
ACPI_FUNCTION_TRACE("acpi_video_bus_put_one_device");
if (!device || !device->video)
return_VALUE(-ENOENT);
return -ENOENT;
video = device->video;
@ -1609,7 +1573,7 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
ACPI_DEVICE_NOTIFY,
acpi_video_device_notify);
return_VALUE(0);
return 0;
}
static int acpi_video_bus_put_devices(struct acpi_video_bus *video)
@ -1617,7 +1581,6 @@ static int acpi_video_bus_put_devices(struct acpi_video_bus *video)
int status;
struct list_head *node, *next;
ACPI_FUNCTION_TRACE("acpi_video_bus_put_devices");
list_for_each_safe(node, next, &video->video_device_list) {
struct acpi_video_device *data =
@ -1636,7 +1599,7 @@ static int acpi_video_bus_put_devices(struct acpi_video_bus *video)
kfree(data);
}
return_VALUE(0);
return 0;
}
/* acpi_video interface */
@ -1656,14 +1619,13 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
struct acpi_video_bus *video = (struct acpi_video_bus *)data;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_video_bus_notify");
printk("video bus notify\n");
if (!video)
return_VOID;
return;
if (acpi_bus_get_device(handle, &device))
return_VOID;
return;
switch (event) {
case ACPI_VIDEO_NOTIFY_SWITCH: /* User request that a switch occur,
@ -1692,7 +1654,7 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
break;
}
return_VOID;
return;
}
static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
@ -1701,14 +1663,13 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
(struct acpi_video_device *)data;
struct acpi_device *device = NULL;
ACPI_FUNCTION_TRACE("acpi_video_device_notify");
printk("video device notify\n");
if (!video_device)
return_VOID;
return;
if (acpi_bus_get_device(handle, &device))
return_VOID;
return;
switch (event) {
case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */
@ -1728,7 +1689,7 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
"Unsupported event [0x%x]\n", event));
break;
}
return_VOID;
return;
}
static int acpi_video_bus_add(struct acpi_device *device)
@ -1737,14 +1698,13 @@ static int acpi_video_bus_add(struct acpi_device *device)
acpi_status status = 0;
struct acpi_video_bus *video = NULL;
ACPI_FUNCTION_TRACE("acpi_video_bus_add");
if (!device)
return_VALUE(-EINVAL);
return -EINVAL;
video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);
if (!video)
return_VALUE(-ENOMEM);
return -ENOMEM;
memset(video, 0, sizeof(struct acpi_video_bus));
video->handle = device->handle;
@ -1791,7 +1751,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
if (result)
kfree(video);
return_VALUE(result);
return result;
}
static int acpi_video_bus_remove(struct acpi_device *device, int type)
@ -1799,10 +1759,9 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
acpi_status status = 0;
struct acpi_video_bus *video = NULL;
ACPI_FUNCTION_TRACE("acpi_video_bus_remove");
if (!device || !acpi_driver_data(device))
return_VALUE(-EINVAL);
return -EINVAL;
video = (struct acpi_video_bus *)acpi_driver_data(device);
@ -1818,7 +1777,7 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
kfree(video->attached_array);
kfree(video);
return_VALUE(0);
return 0;
}
static int
@ -1828,10 +1787,9 @@ acpi_video_bus_match(struct acpi_device *device, struct acpi_driver *driver)
acpi_handle h_dummy2;
acpi_handle h_dummy3;
ACPI_FUNCTION_TRACE("acpi_video_bus_match");
if (!device || !driver)
return_VALUE(-EINVAL);
return -EINVAL;
/* Since there is no HID, CID for ACPI Video drivers, we have
* to check well known required nodes for each feature we support.
@ -1840,26 +1798,25 @@ acpi_video_bus_match(struct acpi_device *device, struct acpi_driver *driver)
/* Does this device able to support video switching ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2)))
return_VALUE(0);
return 0;
/* Does this device able to retrieve a video ROM ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1)))
return_VALUE(0);
return 0;
/* Does this device able to configure which video head to be POSTed ? */
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) &&
ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3)))
return_VALUE(0);
return 0;
return_VALUE(-ENODEV);
return -ENODEV;
}
static int __init acpi_video_init(void)
{
int result = 0;
ACPI_FUNCTION_TRACE("acpi_video_init");
/*
acpi_dbg_level = 0xFFFFFFFF;
@ -1868,27 +1825,26 @@ static int __init acpi_video_init(void)
acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir);
if (!acpi_video_dir)
return_VALUE(-ENODEV);
return -ENODEV;
acpi_video_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_video_bus);
if (result < 0) {
remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
return_VALUE(-ENODEV);
return -ENODEV;
}
return_VALUE(0);
return 0;
}
static void __exit acpi_video_exit(void)
{
ACPI_FUNCTION_TRACE("acpi_video_exit");
acpi_bus_unregister_driver(&acpi_video_bus);
remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
return_VOID;
return;
}
module_init(acpi_video_init);