ALSA: usb-audio: process pending stop at PCM hw_free and close
authorTakashi Iwai <tiwai@suse.de>
Wed, 21 Nov 2012 07:35:42 +0000 (08:35 +0100)
committerTakashi Iwai <tiwai@suse.de>
Wed, 21 Nov 2012 10:43:58 +0000 (11:43 +0100)
PCM hw_free and close should wait until all the pending stop
operations have been finished.  Basically only PCM trigger callback
should use non-wait calls.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

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