[alsa-devel] [PATCH] sound: codecs: fix a missing check for regmap_update_bits

[Kangjie Lu]

regmap_update_bits could fail. The fix checks its status and if
it fails, returns its error code upstream.

Signed-off-by: Kangjie Lu <kjlu at umn.edu>
---
 sound/soc/codecs/cs35l34.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/codecs/cs35l34.c b/sound/soc/codecs/cs35l34.c
index 5063c05afa27..a456b1ac9019 100644
--- a/sound/soc/codecs/cs35l34.c
+++ b/sound/soc/codecs/cs35l34.c
@@ -262,6 +262,8 @@ static int cs35l34_sdin_event(struct snd_soc_dapm_widget *w,
 		}
 		ret = regmap_update_bits(priv->regmap, CS35L34_PWRCTL1,
 					CS35L34_PDN_ALL, CS35L34_PDN_ALL);
+		if (ret < 0)
+			return ret;
 	break;
 	default:
 		pr_err("Invalid event = 0x%x\n", event);
-- 
2.17.1