[PATCH AUTOSEL 5.4 06/48] ASoC: img-parallel-out: Fix a reference count leak

[Sasha Levin]

From: Qiushi Wu <wu000273@xxxxxxx>

[ Upstream commit 6b9fbb073636906eee9fe4d4c05a4f445b9e2a23 ]

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@xxxxxxx>
Link: https://lore.kernel.org/r/20200614033344.1814-1-wu000273@xxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 sound/soc/img/img-parallel-out.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/soc/img/img-parallel-out.c b/sound/soc/img/img-parallel-out.c
index 5ddbe3a31c2e9..4da49a42e8547 100644
--- a/sound/soc/img/img-parallel-out.c
+++ b/sound/soc/img/img-parallel-out.c
@@ -163,8 +163,10 @@ static int img_prl_out_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 	}
 
 	ret = pm_runtime_get_sync(prl->dev);
-	if (ret < 0)
+	if (ret < 0) {
+		pm_runtime_put_noidle(prl->dev);
 		return ret;
+	}
 
 	reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL);
 	reg = (reg & ~IMG_PRL_OUT_CTL_EDGE_MASK) | control_set;
-- 
2.25.1