This is a note to let you know that I've just added the patch titled
ASoC: tas2770: Fix error handling with update_bits
to the 5.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-tas2770-fix-error-handling-with-update_bits.patch
and it can be found in the queue-5.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1633bf11d523c677622c7036df045d7c2ebbfe07
Author: Dan Murphy <dmurphy@xxxxxx>
Date: Fri Sep 18 14:05:46 2020 -0500
ASoC: tas2770: Fix error handling with update_bits
[ Upstream commit cadab0aefcbadf488b16caf2770430e69f4d7839 ]
snd_soc_update_bits returns a 1 when the bit was successfully updated,
returns a 0 is no update was needed and a negative if the call failed.
The code is currently failing the case of a successful update by just
checking for a non-zero number. Modify these checks and return the error
code only if there is a negative.
Fixes: 1a476abc723e6 ("tas2770: add tas2770 smart PA kernel driver")
Signed-off-by: Dan Murphy <dmurphy@xxxxxx>
Link: https://lore.kernel.org/r/20200918190548.12598-7-dmurphy@xxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c
index bdfdad5f4f644..15cdd8b11a67a 100644
--- a/sound/soc/codecs/tas2770.c
+++ b/sound/soc/codecs/tas2770.c
@@ -140,23 +140,18 @@ static int tas2770_dac_event(struct snd_soc_dapm_widget *w,
TAS2770_PWR_CTRL,
TAS2770_PWR_CTRL_MASK,
TAS2770_PWR_CTRL_MUTE);
- if (ret)
- goto end;
break;
case SND_SOC_DAPM_PRE_PMD:
ret = snd_soc_component_update_bits(component,
TAS2770_PWR_CTRL,
TAS2770_PWR_CTRL_MASK,
TAS2770_PWR_CTRL_SHUTDOWN);
- if (ret)
- goto end;
break;
default:
dev_err(tas2770->dev, "Not supported evevt\n");
return -EINVAL;
}
-end:
if (ret < 0)
return ret;
@@ -248,6 +243,9 @@ static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
return -EINVAL;
}
+ if (ret < 0)
+ return ret;
+
tas2770->channel_size = bitwidth;
ret = snd_soc_component_update_bits(component,
@@ -256,16 +254,15 @@ static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
TAS2770_TDM_CFG_REG5_50_MASK,
TAS2770_TDM_CFG_REG5_VSNS_ENABLE |
tas2770->v_sense_slot);
- if (ret)
- goto end;
+ if (ret < 0)
+ return ret;
+
ret = snd_soc_component_update_bits(component,
TAS2770_TDM_CFG_REG6,
TAS2770_TDM_CFG_REG6_ISNS_MASK |
TAS2770_TDM_CFG_REG6_50_MASK,
TAS2770_TDM_CFG_REG6_ISNS_ENABLE |
tas2770->i_sense_slot);
-
-end:
if (ret < 0)
return ret;
@@ -283,36 +280,35 @@ static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate)
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_SMP_MASK,
TAS2770_TDM_CFG_REG0_SMP_48KHZ);
- if (ret)
- goto end;
+ if (ret < 0)
+ return ret;
+
ret = snd_soc_component_update_bits(component,
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_31_MASK,
TAS2770_TDM_CFG_REG0_31_44_1_48KHZ);
- if (ret)
- goto end;
break;
case 44100:
ret = snd_soc_component_update_bits(component,
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_SMP_MASK,
TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
- if (ret)
- goto end;
+ if (ret < 0)
+ return ret;
+
ret = snd_soc_component_update_bits(component,
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_31_MASK,
TAS2770_TDM_CFG_REG0_31_44_1_48KHZ);
- if (ret)
- goto end;
break;
case 96000:
ret = snd_soc_component_update_bits(component,
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_SMP_MASK,
TAS2770_TDM_CFG_REG0_SMP_48KHZ);
- if (ret)
- goto end;
+ if (ret < 0)
+ return ret;
+
ret = snd_soc_component_update_bits(component,
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_31_MASK,
@@ -323,8 +319,9 @@ static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate)
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_SMP_MASK,
TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
- if (ret)
- goto end;
+ if (ret < 0)
+ return ret;
+
ret = snd_soc_component_update_bits(component,
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_31_MASK,
@@ -335,22 +332,22 @@ static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate)
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_SMP_MASK,
TAS2770_TDM_CFG_REG0_SMP_48KHZ);
- if (ret)
- goto end;
+ if (ret < 0)
+ return ret;
+
ret = snd_soc_component_update_bits(component,
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_31_MASK,
TAS2770_TDM_CFG_REG0_31_176_4_192KHZ);
- if (ret)
- goto end;
break;
case 17640:
ret = snd_soc_component_update_bits(component,
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_SMP_MASK,
TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
- if (ret)
- goto end;
+ if (ret < 0)
+ return ret;
+
ret = snd_soc_component_update_bits(component,
TAS2770_TDM_CFG_REG0,
TAS2770_TDM_CFG_REG0_31_MASK,
@@ -360,7 +357,6 @@ static int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate)
ret = -EINVAL;
}
-end:
if (ret < 0)
return ret;
