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ALSA: usb-audio: Save mixer status only once at suspend
authorTakashi Iwai <tiwai@suse.de>
Fri, 2 May 2014 16:14:42 +0000 (18:14 +0200)
committerTakashi Iwai <tiwai@suse.de>
Fri, 2 May 2014 16:14:42 +0000 (18:14 +0200)
commit1c53e7253ed8769a00afa0f06777d731dbe1ba6f
tree63d9f275184d0ccd6d2be62d92b6e8d7c2e670f8tree | snapshot (tar.gz zip)
parentb7a7723513dc89f83d6df13206df55d4dc26e825commit | diff
ALSA: usb-audio: Save mixer status only once at suspend

The suspend callback of usb-audio driver may be called multiple times
per suspend when multiple USB interfaces are bound to a single sound
card instance.  In such a case, it's superfluous to save the mixer
values multiple times.  This patch fixes it by checking the counter.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/usb/card.c diff | blob | blame | history