diff options
| author | Jaroslav Kysela <perex@perex.cz> | 2016-06-17 11:35:56 (GMT) |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-06-17 12:01:06 (GMT) |
| commit | 8198868f0a283eb23e264951632ce61ec2f82228 (patch) | |
| tree | 174fda4a1f0f258019714112392a75326cb8599a /sound | |
| parent | 35639a0e98391036a4c7f23253c321d6621a8897 (diff) | |
| download | linux-8198868f0a283eb23e264951632ce61ec2f82228.tar.xz | |
ALSA: hdac_regmap - fix the register access for runtime PM
Call path:
1) snd_hdac_power_up_pm()
2) snd_hdac_power_up()
3) pm_runtime_get_sync()
4) __pm_runtime_resume()
5) rpm_resume()
The rpm_resume() returns 1 when the device is already active.
Because the return value is unmodified, the hdac regmap read/write
functions should allow this value for the retry I/O operation, too.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/hda/hdac_regmap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/hda/hdac_regmap.c b/sound/hda/hdac_regmap.c index 87041dd..47a358f 100644 --- a/sound/hda/hdac_regmap.c +++ b/sound/hda/hdac_regmap.c @@ -444,7 +444,7 @@ int snd_hdac_regmap_write_raw(struct hdac_device *codec, unsigned int reg, err = reg_raw_write(codec, reg, val); if (err == -EAGAIN) { err = snd_hdac_power_up_pm(codec); - if (!err) + if (err >= 0) err = reg_raw_write(codec, reg, val); snd_hdac_power_down_pm(codec); } @@ -470,7 +470,7 @@ static int __snd_hdac_regmap_read_raw(struct hdac_device *codec, err = reg_raw_read(codec, reg, val, uncached); if (err == -EAGAIN) { err = snd_hdac_power_up_pm(codec); - if (!err) + if (err >= 0) err = reg_raw_read(codec, reg, val, uncached); snd_hdac_power_down_pm(codec); } |