From: Dylan Reid Date: Tue, 31 Jan 2012 21:04:41 +0000 (-0800) Subject: ALSA: hda - Fix calling cs_automic twice for Cirrus codecs. X-Git-Tag: firefly_0821_release~3680^2~2691^2~90 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f70eecde3bca92630d3886496e73316ff353f185;p=firefly-linux-kernel-4.4.55.git 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 Cc: Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c index 0e99357e822c..bc5a993d1146 100644 --- a/sound/pci/hda/patch_cirrus.c +++ b/sound/pci/hda/patch_cirrus.c @@ -988,8 +988,10 @@ static void cs_automic(struct hda_codec *codec) change_cur_input(codec, !spec->automic_idx, 0); } else { if (present) { - spec->last_input = spec->cur_input; - spec->cur_input = spec->automic_idx; + if (spec->cur_input != spec->automic_idx) { + spec->last_input = spec->cur_input; + spec->cur_input = spec->automic_idx; + } } else { spec->cur_input = spec->last_input; }