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ALSA: hdac: Add API for removing hdac extended device 

The HDAC extended device objects are created by HDAC extended bus on probe.
When controller is removed they should be removed as well, so add API
snd_hdac_ext_bus_device_remove for this

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Vinod Koul 2015-08-21 15:47:40 +05:30 committed by Takashi Iwai
parent 9430e54789
commit ee2d51b3d4
2 changed files with 20 additions and 0 deletions
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1
include/sound/hdaudio_ext.h
View File

@ -34,6 +34,7 @@ int snd_hdac_ext_bus_init(struct hdac_ext_bus *sbus, struct device *dev,
void snd_hdac_ext_bus_exit(struct hdac_ext_bus *sbus); void snd_hdac_ext_bus_exit(struct hdac_ext_bus *sbus);
int snd_hdac_ext_bus_device_init(struct hdac_ext_bus *sbus, int addr); int snd_hdac_ext_bus_device_init(struct hdac_ext_bus *sbus, int addr);
void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev); void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev);
void snd_hdac_ext_bus_device_remove(struct hdac_ext_bus *ebus);
#define ebus_to_hbus(ebus) (&(ebus)->bus) #define ebus_to_hbus(ebus) (&(ebus)->bus)
#define hbus_to_ebus(_bus) \ #define hbus_to_ebus(_bus) \

19
sound/hda/ext/hdac_ext_bus.c
View File

@ -172,3 +172,22 @@ void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev)
kfree(hdev); kfree(hdev);
} }
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_exit); EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_exit);
/**
* snd_hdac_ext_bus_device_remove - remove HD-audio extended codec base devices
*
* @ebus: HD-audio extended bus
*/
void snd_hdac_ext_bus_device_remove(struct hdac_ext_bus *ebus)
{
struct hdac_device *codec, *__codec;
/*
* we need to remove all the codec devices objects created in the
* snd_hdac_ext_bus_device_init
*/
list_for_each_entry_safe(codec, __codec, &ebus->bus.codec_list, list) {
snd_hdac_device_unregister(codec);
put_device(&codec->dev);
}
}
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_remove);