tree 3b2a1574c8951eba1b8ece7cb277b1db19200778
parent ea51e5040e24eefe44d70bc654a237ca1f0225b0
author Dylan Reid <dgreid@chromium.org> 1328043881 -0800
committer Takashi Iwai <tiwai@suse.de> 1328085826 +0100

ALSA: hda - Fix calling cs_automic twice for Cirrus codecs.

If cs_automic is called twice (like it is during init) while the mic
is present, it will over-write the last_input with the new one,
causing it to switch back to the automic input when the mic is
unplugged. This leaves the driver in a state (cur_input, last_input,
and automix_idx the same) where the internal mic can not be selected
until it is rebooted without the mic attached.

Check that the mic hasn't already been switched to before setting
last_input.

Signed-off-by: Dylan Reid <dgreid@chromium.org>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>