[PATCH] ASoC: codecs: wm8994: Fix runtime PM leak in wm8994_mic_detect()

[Wentao Liang]

wm8994_mic_detect() resumes the component before configuring the MICBIAS
pins, but the default case of the micbias switch returns -EINVAL right
after taking that reference, skipping the pm_runtime_put() on the
success path. This leaks a runtime PM reference on every call with an
invalid micbias.

Release the reference before returning -EINVAL.

Fixes: f5a2cda4f1db ("ASoC: wm8994: Ensure the device is resumed in wm89xx_mic_detect functions")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Wentao Liang <vulab@xxxxxxxxxxx>
---
 sound/soc/codecs/wm8994.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 1d64c7c42ed1..bfbb8a56b563 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -3535,6 +3535,7 @@ int wm8994_mic_detect(struct snd_soc_component *component, struct snd_soc_jack *
 		break;
 	default:
 		dev_warn(component->dev, "Invalid MICBIAS %d\n", micbias);
+		pm_runtime_put(component->dev);
 		return -EINVAL;
 	}
 
-- 
2.34.1