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authorTakashi Iwai <tiwai@suse.de>2014-08-15 17:35:00 +0200
committerTakashi Iwai <tiwai@suse.de>2014-08-16 09:10:26 +0200
commitf3ee07d8b6e061bf34a7167c3f564e8da4360a99 (patch)
treef8e6246f10a4e3d1b97eaf90ba98958f0401eb9b /sound
parent01d5500f35ad97887d786af03486d03e67965a6d (diff)
downloadlinux-stericsson-f3ee07d8b6e061bf34a7167c3f564e8da4360a99.tar.gz
ALSA: hda/realtek - Avoid setting wrong COEF on ALC269 & co
ALC269 & co have many vendor-specific setups with COEF verbs. However, some verbs seem specific to some codec versions and they result in the codec stalling. Typically, such a case can be avoided by checking the return value from reading a COEF. If the return value is -1, it implies that the COEF is invalid, thus it shouldn't be written. This patch adds the invalid COEF checks in appropriate places accessing ALC269 and its variants. The patch actually fixes the resume problem on Acer AO725 laptop. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=52181 Tested-by: Francesco Muzio <muziofg@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/pci/hda/patch_realtek.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 6b38ec3c6e57..b32ce086d2e0 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -181,6 +181,8 @@ static void alc_fix_pll(struct hda_codec *codec)
spec->pll_coef_idx);
val = snd_hda_codec_read(codec, spec->pll_nid, 0,
AC_VERB_GET_PROC_COEF, 0);
+ if (val == -1)
+ return;
snd_hda_codec_write(codec, spec->pll_nid, 0, AC_VERB_SET_COEF_INDEX,
spec->pll_coef_idx);
snd_hda_codec_write(codec, spec->pll_nid, 0, AC_VERB_SET_PROC_COEF,
@@ -2806,6 +2808,8 @@ static void alc286_shutup(struct hda_codec *codec)
static void alc269vb_toggle_power_output(struct hda_codec *codec, int power_up)
{
int val = alc_read_coef_idx(codec, 0x04);
+ if (val == -1)
+ return;
if (power_up)
val |= 1 << 11;
else
@@ -5311,27 +5315,30 @@ static void alc269_fill_coef(struct hda_codec *codec)
if ((alc_get_coef0(codec) & 0x00ff) == 0x017) {
val = alc_read_coef_idx(codec, 0x04);
/* Power up output pin */
- alc_write_coef_idx(codec, 0x04, val | (1<<11));
+ if (val != -1)
+ alc_write_coef_idx(codec, 0x04, val | (1<<11));
}
if ((alc_get_coef0(codec) & 0x00ff) == 0x018) {
val = alc_read_coef_idx(codec, 0xd);
- if ((val & 0x0c00) >> 10 != 0x1) {
+ if (val != -1 && (val & 0x0c00) >> 10 != 0x1) {
/* Capless ramp up clock control */
alc_write_coef_idx(codec, 0xd, val | (1<<10));
}
val = alc_read_coef_idx(codec, 0x17);
- if ((val & 0x01c0) >> 6 != 0x4) {
+ if (val != -1 && (val & 0x01c0) >> 6 != 0x4) {
/* Class D power on reset */
alc_write_coef_idx(codec, 0x17, val | (1<<7));
}
}
val = alc_read_coef_idx(codec, 0xd); /* Class D */
- alc_write_coef_idx(codec, 0xd, val | (1<<14));
+ if (val != -1)
+ alc_write_coef_idx(codec, 0xd, val | (1<<14));
val = alc_read_coef_idx(codec, 0x4); /* HP */
- alc_write_coef_idx(codec, 0x4, val | (1<<11));
+ if (val != -1)
+ alc_write_coef_idx(codec, 0x4, val | (1<<11));
}
/*