3.16-stable review patch. If anyone has any objections, please let me know.
------------------
From: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
commit a72d2abbe5752f3a773c4d8b7b41ae41f617f772 upstream.
We need to return the error codes from aic31xx_device_init() and return
from the i2c_probe with the error code.
We will have kernel panic (NULL pointer dereference) in
regulator_register_notifier() in case the devm_regulator_bulk_get() fails
(with -EPROBE_DEFER for example).
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/soc/codecs/tlv320aic31xx.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/sound/soc/codecs/tlv320aic31xx.c
+++ b/sound/soc/codecs/tlv320aic31xx.c
@@ -1178,7 +1178,7 @@ static void aic31xx_pdata_from_of(struct
}
#endif /* CONFIG_OF */
-static void aic31xx_device_init(struct aic31xx_priv *aic31xx)
+static int aic31xx_device_init(struct aic31xx_priv *aic31xx)
{
int ret, i;
@@ -1197,7 +1197,7 @@ static void aic31xx_device_init(struct a
"aic31xx-reset-pin");
if (ret < 0) {
dev_err(aic31xx->dev, "not able to acquire gpio\n");
- return;
+ return ret;
}
}
@@ -1210,6 +1210,7 @@ static void aic31xx_device_init(struct a
if (ret != 0)
dev_err(aic31xx->dev, "Failed to request supplies: %d\n", ret);
+ return ret;
}
static int aic31xx_i2c_probe(struct i2c_client *i2c,
@@ -1239,7 +1240,9 @@ static int aic31xx_i2c_probe(struct i2c_
aic31xx->pdata.codec_type = id->driver_data;
- aic31xx_device_init(aic31xx);
+ ret = aic31xx_device_init(aic31xx);
+ if (ret)
+ return ret;
return snd_soc_register_codec(&i2c->dev, &soc_codec_driver_aic31xx,
aic31xx_dai_driver,
--
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