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authorTakashi Iwai <tiwai@suse.de>2014-02-03 09:56:13 +0100
committerTakashi Iwai <tiwai@suse.de>2014-02-05 07:17:49 +0100
commitd3c56568f43807135f2c2a09582a69f809f0d8b7 (patch)
treede957803672a87a900fe08e69085e4b8a2e233da
parent4528eb19b00d9ccd65ded6f8201eec704267edd8 (diff)
downloadop-kernel-dev-d3c56568f43807135f2c2a09582a69f809f0d8b7.zip
op-kernel-dev-d3c56568f43807135f2c2a09582a69f809f0d8b7.tar.gz
ALSA: hda/realtek - Avoid invalid COEFs for ALC271X
We've seen often problems after suspend/resume on Acer Aspire One AO725 with ALC271X codec as reported in kernel bugzilla, and it turned out that some COEFs doesn't work and triggers the codec communication stall. Since these magic COEF setups are specific to ALC269VB for some PLL configurations, the machine works even without these manual adjustment. So, let's simply avoid applying them for ALC271X. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=52181 Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/pci/hda/patch_realtek.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 56a8f18..e16a71e 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4427,6 +4427,9 @@ static void alc269_fill_coef(struct hda_codec *codec)
if (spec->codec_variant != ALC269_TYPE_ALC269VB)
return;
+ /* ALC271X doesn't seem to support these COEFs (bko#52181) */
+ if (!strcmp(codec->chip_name, "ALC271X"))
+ return;
if ((alc_get_coef0(codec) & 0x00ff) < 0x015) {
alc_write_coef_idx(codec, 0xf, 0x960b);
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