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@xxxxxxxx>
---
sound/hda/hdac_regmap.c | 4 ++--
1 file 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);
}
--
2.5.5
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