Looks like the buffer size for the stereo capture has to be a
power of two. Now added a constraint to buffer bytes.
Also removed unnecessary #if 0 lines.
Signed-off-by: Rene Herman <rene.herman@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>