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ALSA: hda: add hda link cleanup routine

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In HDA extended bus the HDA link objects are created when multilink
capabilities are parsed. We need a routine which free up these link objects
for a bus. So add snd_hdac_link_free_all routine

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Vinod Koul 2015-06-17 11:20:17 +05:30 committed by Takashi Iwai
parent e7a3484dc5
commit bab4445f9a
2 changed files with 19 additions and 0 deletions
include/sound
hdaudio_ext.h
sound/hda/ext
hdac_ext_controller.c

1
include/sound/hdaudio_ext.h
View File

@ -90,6 +90,7 @@ void snd_hdac_ext_stream_init(struct hdac_ext_bus *bus,
int snd_hdac_ext_stream_init_all(struct hdac_ext_bus *ebus, int start_idx, int snd_hdac_ext_stream_init_all(struct hdac_ext_bus *ebus, int start_idx,
int num_stream, int dir); int num_stream, int dir);
void snd_hdac_stream_free_all(struct hdac_ext_bus *ebus); void snd_hdac_stream_free_all(struct hdac_ext_bus *ebus);
void snd_hdac_link_free_all(struct hdac_ext_bus *ebus);
struct hdac_ext_stream *snd_hdac_ext_stream_assign(struct hdac_ext_bus *bus, struct hdac_ext_stream *snd_hdac_ext_stream_assign(struct hdac_ext_bus *bus,
struct snd_pcm_substream *substream, struct snd_pcm_substream *substream,
int type); int type);

18
sound/hda/ext/hdac_ext_controller.c
View File

@ -193,6 +193,24 @@ int snd_hdac_ext_bus_get_ml_capabilities(struct hdac_ext_bus *ebus)
} }
EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_ml_capabilities); EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_get_ml_capabilities);
/**
* snd_hdac_link_free_all- free hdac extended link objects
*
* @ebus: HD-audio ext core bus
*/
void snd_hdac_link_free_all(struct hdac_ext_bus *ebus)
{
struct hdac_ext_link *l;
while (!list_empty(&ebus->hlink_list)) {
l = list_first_entry(&ebus->hlink_list, struct hdac_ext_link, list);
list_del(&l->list);
kfree(l);
}
}
EXPORT_SYMBOL_GPL(snd_hdac_link_free_all);
/** /**
* snd_hdac_ext_bus_get_link_index - get link based on codec name * snd_hdac_ext_bus_get_link_index - get link based on codec name
* @ebus: HD-audio extended core bus * @ebus: HD-audio extended core bus