diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0293-ASoC-pcm512x-Fix-a-double-unlock-in-pcm512x_digital_.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0293-ASoC-pcm512x-Fix-a-double-unlock-in-pcm512x_digital_.patch | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0293-ASoC-pcm512x-Fix-a-double-unlock-in-pcm512x_digital_.patch b/target/linux/brcm2708/patches-4.19/950-0293-ASoC-pcm512x-Fix-a-double-unlock-in-pcm512x_digital_.patch new file mode 100644 index 0000000000..f1a09c4922 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0293-ASoC-pcm512x-Fix-a-double-unlock-in-pcm512x_digital_.patch @@ -0,0 +1,62 @@ +From 26001d54a7f803258b161f25f457ce11523695d7 Mon Sep 17 00:00:00 2001 +From: Dan Carpenter <dan.carpenter@oracle.com> +Date: Fri, 21 Dec 2018 12:11:20 +0300 +Subject: [PATCH] ASoC: pcm512x: Fix a double unlock in + pcm512x_digital_mute() + +[ Upstream commit 28b698b7342c7d5300cfe217cd77ff7d2a55e03d ] + +We accidentally call mutex_unlock(&pcm512x->mutex); twice in a row. + +I re-wrote the error handling to use "goto unlock;" instead of returning +directly. Hopefully, it makes the code a little simpler. + +Fixes: 3500f1c589e9 ("ASoC: pcm512x: Implement the digital_mute interface") +Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> +Reviwed-by: Dimitris Papavasiliou <dpapavas@gmail.com> +Signed-off-by: Mark Brown <broonie@kernel.org> +--- + sound/soc/codecs/pcm512x.c | 11 ++++------- + 1 file changed, 4 insertions(+), 7 deletions(-) + +--- a/sound/soc/codecs/pcm512x.c ++++ b/sound/soc/codecs/pcm512x.c +@@ -1404,24 +1404,20 @@ static int pcm512x_digital_mute(struct s + if (ret != 0) { + dev_err(component->dev, + "Failed to set digital mute: %d\n", ret); +- mutex_unlock(&pcm512x->mutex); +- return ret; ++ goto unlock; + } + + regmap_read_poll_timeout(pcm512x->regmap, + PCM512x_ANALOG_MUTE_DET, + mute_det, (mute_det & 0x3) == 0, + 200, 10000); +- +- mutex_unlock(&pcm512x->mutex); + } else { + pcm512x->mute &= ~0x1; + ret = pcm512x_update_mute(pcm512x); + if (ret != 0) { + dev_err(component->dev, + "Failed to update digital mute: %d\n", ret); +- mutex_unlock(&pcm512x->mutex); +- return ret; ++ goto unlock; + } + + regmap_read_poll_timeout(pcm512x->regmap, +@@ -1432,9 +1428,10 @@ static int pcm512x_digital_mute(struct s + 200, 10000); + } + ++unlock: + mutex_unlock(&pcm512x->mutex); + +- return 0; ++ return ret; + } + + static int pcm512x_set_tdm_slot(struct snd_soc_dai *dai, |