Clemens Ladisch e7373b702f sound: pcm: record a substream's owner process ...

Record the pid of the task that opened a PCM substream. For sound
cards with hardware mixing, this allows determining which process
is associated with a specific substream's volume control.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2009-11-10 16:32:20 +01:00

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