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Looks like I completely forgot to do this. This patch adds locking to the tas codec so two userspace programs can't hit the controls at the same time. Tested on my powerbook, but I obviously can't find any problems even without it since it doesn't do SMP. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>