From a72d2abbe5752f3a773c4d8b7b41ae41f617f772 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Fri, 25 Jul 2014 13:12:54 +0300 Subject: [PATCH] ASoC: tlv320aic31xx: Do not ignore errors in aic31xx_device_init() 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 Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/codecs/tlv320aic31xx.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/sound/soc/codecs/tlv320aic31xx.c b/sound/soc/codecs/tlv320aic31xx.c index 23419109ecac..1cdae8ccc61b 100644 --- a/sound/soc/codecs/tlv320aic31xx.c +++ b/sound/soc/codecs/tlv320aic31xx.c @@ -1178,7 +1178,7 @@ static void aic31xx_pdata_from_of(struct aic31xx_priv *aic31xx) } #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 aic31xx_priv *aic31xx) "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 aic31xx_priv *aic31xx) 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_client *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, -- 2.30.2