[ALSA] ac97 - Fix silent output problem with Cx20551 codec

Fixed the silent output problem on laptops with Conexant Cx20551 codec
chip, such as Packard-bell EasyNote A* series.
The information was taken from ALSA bug#1134.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 6 insertions, 0 deletions

diff --git a/sound/pci/ac97/ac97_patch.c b/sound/pci/ac97/ac97_patch.c
index 641d0c8d659e..bfc2fed16da3 100644
--- a/sound/pci/ac97/ac97_patch.c
+++ b/sound/pci/ac97/ac97_patch.c
@@ -1338,6 +1338,12 @@ int patch_conexant(struct snd_ac97 * ac97)
         return 0;
 }
 
+int patch_cx20551(struct snd_ac97 *ac97)
+{
+        snd_ac97_update_bits(ac97, 0x5c, 0x01, 0x01);
+        return 0;
+}
+
 /*
  * Analog Device AD18xx, AD19xx codecs
  */