GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-23 23:32:14 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

iio: core: implement devm_iio_device_alloc/devm_iio_device_free

Browse source 
Add a resource managed devm_iio_device_alloc()/devm_iio_device_free()
to automatically clean up any allocations made by IIO drivers,
thus leading to simplified IIO drivers code.

In addition, this will allow IIO drivers to use other devm_*() API
(like devm_request_irq) and don't care about the race between
iio_device_free() and the release of resources by Device core
during driver removing.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Tested-by: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Grygorii Strashko 2013-07-18 11:19:00 +01:00 • committed by Jonathan Cameron
parent 60b188f0d6
commit 9dabaf5edd
2 changed files with 72 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

25
include/linux/iio/iio.h
View file

@ -531,6 +531,31 @@ static inline struct iio_dev *iio_priv_to_dev(void *priv)
**/
void iio_device_free(struct iio_dev *indio_dev);
/**
* devm_iio_device_alloc - Resource-managed iio_device_alloc()
* @dev: Device to allocate iio_dev for
* @sizeof_priv: Space to allocate for private structure.
*
* Managed iio_device_alloc. iio_dev allocated with this function is
* automatically freed on driver detach.
*
* If an iio_dev allocated with this function needs to be freed separately,
* devm_iio_device_free() must be used.
*
* RETURNS:
* Pointer to allocated iio_dev on success, NULL on failure.
*/
struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv);
/**
* devm_iio_device_free - Resource-managed iio_device_free()
* @dev: Device this iio_dev belongs to
* @indio_dev: the iio_dev associated with the device
*
* Free indio_dev allocated with devm_iio_device_alloc().
*/
void devm_iio_device_free(struct device *dev, struct iio_dev *iio_dev);
/**
* iio_buffer_enabled() - helper function to test if the buffer is enabled
* @indio_dev: IIO device structure for device