diff options
| author | Takashi Iwai <tiwai@suse.de> | 2015-04-09 07:58:46 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-04-09 08:24:51 +0200 |
| commit | 9efe2731db3a8944d26233bb47532011411810fb (patch) | |
| tree | 9ce695d20786db896f61e3d0e914c9b752330152 /sound/hda | |
| parent | ALSA: hda - Work around races of power up/down with runtime PM (diff) | |
| download | linux-9efe2731db3a8944d26233bb47532011411810fb.tar.xz linux-9efe2731db3a8944d26233bb47532011411810fb.zip | |
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')
| -rw-r--r-- | sound/hda/hdac_regmap.c | 10 |
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); |