Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-01 00:21:32 +00:00
Code Issues Packages Projects Releases Wiki Activity

mfd: kempld-core: Check for DMI definition before ACPI

Browse Source 
Change the detection order to priorize DMI table entries over available
ACPI entries.

This makes it more easy for product developers to patch product specific
handling into the driver.
Furthermore it allows to simplify the implementation a bit and
especially to remove the need to force synchronous probing.

Signed-off-by: Michael Brunner <michael.brunner@kontron.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Michael Brunner 2020-11-16 06:42:24 +00:00 committed by Lee Jones
parent 129989d5ca
commit f31cc6afab
1 changed files with 3 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/mfd/kempld-core.c
View File

@ -125,7 +125,6 @@ static const struct kempld_platform_data kempld_platform_data_generic = {
};
static struct platform_device *kempld_pdev;
static bool kempld_acpi_mode;
static int kempld_create_platform_device(const struct dmi_system_id *id)
{
@ -501,8 +500,6 @@ static int kempld_probe(struct platform_device *pdev)
ret = kempld_get_acpi_data(pdev);
if (ret)
return ret;
kempld_acpi_mode = true;
} else if (kempld_pdev != pdev) {
/*
* The platform device we are probing is not the one we
@ -565,7 +562,6 @@ static struct platform_driver kempld_driver = {
.driver = {
.name = "kempld",
.acpi_match_table = ACPI_PTR(kempld_acpi_table),
.probe_type = PROBE_FORCE_SYNCHRONOUS,
},
.probe = kempld_probe,
.remove = kempld_remove,
@ -884,7 +880,6 @@ MODULE_DEVICE_TABLE(dmi, kempld_dmi_table);
static int __init kempld_init(void)
{
const struct dmi_system_id *id;
int ret;
if (force_device_id[0]) {
for (id = kempld_dmi_table;
@ -894,24 +889,11 @@ static int __init kempld_init(void)
break;
if (id->matches[0].slot == DMI_NONE)
return -ENODEV;
} else {
dmi_check_system(kempld_dmi_table);
}
ret = platform_driver_register(&kempld_driver);
if (ret)
return ret;
/*
* With synchronous probing the device should already be probed now.
* If no device id is forced and also no ACPI definition for the
* device was found, scan DMI table as fallback.
*
* If drivers_autoprobing is disabled and the device is found here,
* only that device can be bound manually later.
*/
if (!kempld_pdev && !kempld_acpi_mode)
dmi_check_system(kempld_dmi_table);
return 0;
return platform_driver_register(&kempld_driver);
}
static void __exit kempld_exit(void)