diff options
| -rw-r--r-- | drivers/input/input.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index 1c8c8a5bc4a..7cf2b4f603a 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -37,7 +37,7 @@ static struct input_handler *input_table[8]; /** * input_event() - report new input event - * @handle: device that generated the event + * @dev: device that generated the event * @type: type of the event * @code: event code * @value: value of the event @@ -900,6 +900,15 @@ struct class input_class = { }; EXPORT_SYMBOL_GPL(input_class); +/** + * input_allocate_device - allocate memory for new input device + * + * Returns prepared struct input_dev or NULL. + * + * NOTE: Use input_free_device() to free devices that have not been + * registered; input_unregister_device() should be used for already + * registered devices. + */ struct input_dev *input_allocate_device(void) { struct input_dev *dev; @@ -919,6 +928,20 @@ struct input_dev *input_allocate_device(void) } EXPORT_SYMBOL(input_allocate_device); +/** + * input_free_device - free memory occupied by input_dev structure + * @dev: input device to free + * + * This function should only be used if input_register_device() + * was not called yet or if it failed. Once device was registered + * use input_unregister_device() and memory will be freed once last + * refrence to the device is dropped. + * + * Device should be allocated by input_allocate_device(). + * + * NOTE: If there are references to the input device then memory + * will not be freed until last reference is dropped. + */ void input_free_device(struct input_dev *dev) { if (dev) { |