tree 01e2401935c57f80f6b78d1906128f006655b432
parent 91d12c485b8949cce6c13ab641147c5bc86ce8b9
author Clemens Ladisch <clemens@ladisch.de> 1257844410 +0100
committer Takashi Iwai <tiwai@suse.de> 1257867140 +0100

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>