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authorTakashi Iwai <tiwai@suse.de>2015-04-09 07:58:46 +0200
committerTakashi Iwai <tiwai@suse.de>2015-04-09 08:24:51 +0200
commit9efe2731db3a8944d26233bb47532011411810fb (patch)
tree9ce695d20786db896f61e3d0e914c9b752330152 /sound/hda/hdac_regmap.c
parent664c715573c2c116c2d8f5de7d59ce85a98a1751 (diff)
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ALSA: hda - Always allow access for POWER_STATE verbs via regmap
The hdac regmap code checks whether the codec is powered on while accessing, but there must be an exception -- the verbs to control the power state. Currently HD-audio driver doesn't access them via regmap, so this patch doesn't fix any current behavior, but it's just for future. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda/hdac_regmap.c')
-rw-r--r--sound/hda/hdac_regmap.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/sound/hda/hdac_regmap.c b/sound/hda/hdac_regmap.c
index 64876fa357c9..51f1b5c8a91c 100644
--- a/sound/hda/hdac_regmap.c
+++ b/sound/hda/hdac_regmap.c
@@ -239,7 +239,7 @@ static int hda_reg_read(void *context, unsigned int reg, unsigned int *val)
int verb = get_verb(reg);
int err;
- if (!codec_is_running(codec))
+ if (!codec_is_running(codec) && verb != AC_VERB_GET_POWER_STATE)
return -EAGAIN;
reg |= (codec->addr << 28);
if (is_stereo_amp_verb(reg))
@@ -265,16 +265,16 @@ static int hda_reg_write(void *context, unsigned int reg, unsigned int val)
unsigned int verb;
int i, bytes, err;
- if (!codec_is_running(codec))
- return codec->lazy_cache ? 0 : -EAGAIN;
-
reg &= ~0x00080000U; /* drop GET bit */
reg |= (codec->addr << 28);
+ verb = get_verb(reg);
+
+ if (!codec_is_running(codec) && verb != AC_VERB_SET_POWER_STATE)
+ return codec->lazy_cache ? 0 : -EAGAIN;
if (is_stereo_amp_verb(reg))
return hda_reg_write_stereo_amp(codec, reg, val);
- verb = get_verb(reg);
if (verb == AC_VERB_SET_PROC_COEF)
return hda_reg_write_coef(codec, reg, val);