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Input updates for v6.12-rc5

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- a fix for regression in input core introduced in 6.11 preventing
   re-registering input handlers
 
 - a fix for adp5588-keys driver tyring to disable interrupt 0 at suspend
   when devices is used without interrupt
 
 - a fix for edt-ft5x06 to stop leaking regmap structure when probing
   fails and to make sure it is not released too early on removal.
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Merge tag 'input-for-v6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:

 - a fix for regression in input core introduced in 6.11 preventing
   re-registering input handlers

 - a fix for adp5588-keys driver tyring to disable interrupt 0 at
   suspend when devices is used without interrupt

 - a fix for edt-ft5x06 to stop leaking regmap structure when probing
   fails and to make sure it is not released too early on removal.

* tag 'input-for-v6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: fix regression when re-registering input handlers
  Input: adp5588-keys - do not try to disable interrupt 0
  Input: edt-ft5x06 - fix regmap leak when probe fails
This commit is contained in:
Linus Torvalds 2024-11-03 08:35:29 -10:00
commit 295ba6501d
4 changed files with 104 additions and 65 deletions
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134
drivers/input/input.c
View File

@ -119,12 +119,12 @@ static void input_pass_values(struct input_dev *dev,
handle = rcu_dereference(dev->grab);
if (handle) {
count = handle->handler->events(handle, vals, count);
count = handle->handle_events(handle, vals, count);
} else {
list_for_each_entry_rcu(handle, &dev->h_list, d_node)
if (handle->open) {
count = handle->handler->events(handle, vals,
count);
count = handle->handle_events(handle, vals,
count);
if (!count)
break;
}
@ -2534,57 +2534,6 @@ static int input_handler_check_methods(const struct input_handler *handler)
return 0;
}
/*
* An implementation of input_handler's events() method that simply
* invokes handler->event() method for each event one by one.
*/
static unsigned int input_handler_events_default(struct input_handle *handle,
struct input_value *vals,
unsigned int count)
{
struct input_handler *handler = handle->handler;
struct input_value *v;
for (v = vals; v != vals + count; v++)
handler->event(handle, v->type, v->code, v->value);
return count;
}
/*
* An implementation of input_handler's events() method that invokes
* handler->filter() method for each event one by one and removes events
* that were filtered out from the "vals" array.
*/
static unsigned int input_handler_events_filter(struct input_handle *handle,
struct input_value *vals,
unsigned int count)
{
struct input_handler *handler = handle->handler;
struct input_value *end = vals;
struct input_value *v;
for (v = vals; v != vals + count; v++) {
if (handler->filter(handle, v->type, v->code, v->value))
continue;
if (end != v)
*end = *v;
end++;
}
return end - vals;
}
/*
* An implementation of input_handler's events() method that does nothing.
*/
static unsigned int input_handler_events_null(struct input_handle *handle,
struct input_value *vals,
unsigned int count)
{
return count;
}
/**
* input_register_handler - register a new input handler
* @handler: handler to be registered
@ -2604,13 +2553,6 @@ int input_register_handler(struct input_handler *handler)
INIT_LIST_HEAD(&handler->h_list);
if (handler->filter)
handler->events = input_handler_events_filter;
else if (handler->event)
handler->events = input_handler_events_default;
else if (!handler->events)
handler->events = input_handler_events_null;
error = mutex_lock_interruptible(&input_mutex);
if (error)
return error;
@ -2684,6 +2626,75 @@ int input_handler_for_each_handle(struct input_handler *handler, void *data,
}
EXPORT_SYMBOL(input_handler_for_each_handle);
/*
* An implementation of input_handle's handle_events() method that simply
* invokes handler->event() method for each event one by one.
*/
static unsigned int input_handle_events_default(struct input_handle *handle,
struct input_value *vals,
unsigned int count)
{
struct input_handler *handler = handle->handler;
struct input_value *v;
for (v = vals; v != vals + count; v++)
handler->event(handle, v->type, v->code, v->value);
return count;
}
/*
* An implementation of input_handle's handle_events() method that invokes
* handler->filter() method for each event one by one and removes events
* that were filtered out from the "vals" array.
*/
static unsigned int input_handle_events_filter(struct input_handle *handle,
struct input_value *vals,
unsigned int count)
{
struct input_handler *handler = handle->handler;
struct input_value *end = vals;
struct input_value *v;
for (v = vals; v != vals + count; v++) {
if (handler->filter(handle, v->type, v->code, v->value))
continue;
if (end != v)
*end = *v;
end++;
}
return end - vals;
}
/*
* An implementation of input_handle's handle_events() method that does nothing.
*/
static unsigned int input_handle_events_null(struct input_handle *handle,
struct input_value *vals,
unsigned int count)
{
return count;
}
/*
* Sets up appropriate handle->event_handler based on the input_handler
* associated with the handle.
*/
static void input_handle_setup_event_handler(struct input_handle *handle)
{
struct input_handler *handler = handle->handler;
if (handler->filter)
handle->handle_events = input_handle_events_filter;
else if (handler->event)
handle->handle_events = input_handle_events_default;
else if (handler->events)
handle->handle_events = handler->events;
else
handle->handle_events = input_handle_events_null;
}
/**
* input_register_handle - register a new input handle
* @handle: handle to register
@ -2701,6 +2712,7 @@ int input_register_handle(struct input_handle *handle)
struct input_dev *dev = handle->dev;
int error;
input_handle_setup_event_handler(handle);
/*
* We take dev->mutex here to prevent race with
* input_release_device().

6
drivers/input/keyboard/adp5588-keys.c
View File

@ -822,7 +822,8 @@ static int adp5588_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
disable_irq(client->irq);
if (client->irq)
disable_irq(client->irq);
return 0;
}
@ -831,7 +832,8 @@ static int adp5588_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
enable_irq(client->irq);
if (client->irq)
enable_irq(client->irq);
return 0;
}

19
drivers/input/touchscreen/edt-ft5x06.c
View File

@ -1121,6 +1121,14 @@ static void edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata)
}
}
static void edt_ft5x06_exit_regmap(void *arg)
{
struct edt_ft5x06_ts_data *data = arg;
if (!IS_ERR_OR_NULL(data->regmap))
regmap_exit(data->regmap);
}
static void edt_ft5x06_disable_regulators(void *arg)
{
struct edt_ft5x06_ts_data *data = arg;
@ -1154,6 +1162,16 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client)
return PTR_ERR(tsdata->regmap);
}
/*
* We are not using devm_regmap_init_i2c() and instead install a
* custom action because we may replace regmap with M06-specific one
* and we need to make sure that it will not be released too early.
*/
error = devm_add_action_or_reset(&client->dev, edt_ft5x06_exit_regmap,
tsdata);
if (error)
return error;
chip_data = device_get_match_data(&client->dev);
if (!chip_data)
chip_data = (const struct edt_i2c_chip_data *)id->driver_data;
@ -1347,7 +1365,6 @@ static void edt_ft5x06_ts_remove(struct i2c_client *client)
struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client);
edt_ft5x06_ts_teardown_debugfs(tsdata);
regmap_exit(tsdata->regmap);
}
static int edt_ft5x06_ts_suspend(struct device *dev)

10
include/linux/input.h
View File

@ -339,12 +339,16 @@ struct input_handler {
* @name: name given to the handle by handler that created it
* @dev: input device the handle is attached to
* @handler: handler that works with the device through this handle
* @handle_events: event sequence handler. It is set up by the input core
* according to event handling method specified in the @handler. See
* input_handle_setup_event_handler().
* This method is being called by the input core with interrupts disabled
* and dev->event_lock spinlock held and so it may not sleep.
* @d_node: used to put the handle on device's list of attached handles
* @h_node: used to put the handle on handler's list of handles from which
* it gets events
*/
struct input_handle {
void *private;
int open;
@ -353,6 +357,10 @@ struct input_handle {
struct input_dev *dev;
struct input_handler *handler;
unsigned int (*handle_events)(struct input_handle *handle,
struct input_value *vals,
unsigned int count);
struct list_head d_node;
struct list_head h_node;
};