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Commit 8931bf62 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Mark Brown
Browse files

ASoC: Add resource managed snd_soc_register_platform() 



Simplify error handling and remove repetitive (and rarely executed) code
for unregistration by providing a devm_snd_soc_register_platform()
platform.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent c9eaa447

include/sound/soc.h

+2 −0
Original line number Diff line number Diff line
@@ -377,6 +377,8 @@ int snd_soc_resume(struct device *dev); 
int snd_soc_poweroff(struct device *dev);

int snd_soc_register_platform(struct device *dev,

		const struct snd_soc_platform_driver *platform_drv);

int devm_snd_soc_register_platform(struct device *dev,

		const struct snd_soc_platform_driver *platform_drv);

void snd_soc_unregister_platform(struct device *dev);

int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,

		const struct snd_soc_platform_driver *platform_drv);

sound/soc/soc-devres.c

+34 −0
Original line number Diff line number Diff line
@@ -52,6 +52,40 @@ int devm_snd_soc_register_component(struct device *dev, 
}

EXPORT_SYMBOL_GPL(devm_snd_soc_register_component);



static void devm_platform_release(struct device *dev, void *res)

{

	snd_soc_unregister_platform(*(struct device **)res);

}



/**

 * devm_snd_soc_register_platform - resource managed platform registration

 * @dev: Device used to manage platform

 * @platform: platform to register

 *

 * Register a platform driver with automatic unregistration when the device is

 * unregistered.

 */

int devm_snd_soc_register_platform(struct device *dev,

			const struct snd_soc_platform_driver *platform_drv)

{

	struct device **ptr;

	int ret;



	ptr = devres_alloc(devm_platform_release, sizeof(*ptr), GFP_KERNEL);

	if (!ptr)

		return -ENOMEM;



	ret = snd_soc_register_platform(dev, platform_drv);

	if (ret == 0) {

		*ptr = dev;

		devres_add(dev, ptr);

	} else {

		devres_free(ptr);

	}



	return ret;

}



static void devm_card_release(struct device *dev, void *res)

{

	snd_soc_unregister_card(*(struct snd_soc_card **)res);