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ASoC: img: Fix a reference count leak in img_i2s_in_set_fmt

Message ID 20200614033749.2975-1-wu000273@umn.edu
State Accepted
Commit c4c59b95b7f7d4cef5071b151be2dadb33f3287b
Headers show
Series ASoC: img: Fix a reference count leak in img_i2s_in_set_fmt | expand

Commit Message

wu000273@umn.edu June 14, 2020, 3:37 a.m. UTC 
From: Qiushi Wu <wu000273@umn.edu>

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code, causing incorrect ref count if
pm_runtime_put_noidle() is not called in error handling paths.
Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails.

Signed-off-by: Qiushi Wu <wu000273@umn.edu>
---
 sound/soc/img/img-i2s-in.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

diff --git a/sound/soc/img/img-i2s-in.c b/sound/soc/img/img-i2s-in.c
index e30b66b94bf6..0843235d73c9 100644
--- a/sound/soc/img/img-i2s-in.c
+++ b/sound/soc/img/img-i2s-in.c
@@ -343,8 +343,10 @@  static int img_i2s_in_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 	chan_control_mask = IMG_I2S_IN_CH_CTL_CLK_TRANS_MASK;
 
 	ret = pm_runtime_get_sync(i2s->dev);
-	if (ret < 0)
+	if (ret < 0) {
+		pm_runtime_put_noidle(i2s->dev);
 		return ret;
+	}
 
 	for (i = 0; i < i2s->active_channels; i++)
 		img_i2s_in_ch_disable(i2s, i);