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Subject[PATCH 4.9 066/175] staging: greybus: codecs: Fix reference counter leak in error handling
Date
From: Zhang Qilong <zhangqilong3@huawei.com>

[ Upstream commit 3952659a6108f77a0d062d8e8487bdbdaf52a66c ]

gb_pm_runtime_get_sync has increased the usage counter of the device here.
Forgetting to call gb_pm_runtime_put_noidle will result in usage counter
leak in the error branch of (gbcodec_hw_params and gbcodec_prepare). We
fixed it by adding it.

Fixes: c388ae7696992 ("greybus: audio: Update pm runtime support in dai_ops callback")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201109131347.1725288-2-zhangqilong3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/staging/greybus/audio_codec.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c
index 8a0744b58a329..4c2d6c2d4fb41 100644
--- a/drivers/staging/greybus/audio_codec.c
+++ b/drivers/staging/greybus/audio_codec.c
@@ -491,6 +491,7 @@ static int gbcodec_hw_params(struct snd_pcm_substream *substream,
if (ret) {
dev_err_ratelimited(dai->dev, "%d: Error during set_config\n",
ret);
+ gb_pm_runtime_put_noidle(bundle);
mutex_unlock(&codec->lock);
return ret;
}
@@ -562,6 +563,7 @@ static int gbcodec_prepare(struct snd_pcm_substream *substream,
break;
}
if (ret) {
+ gb_pm_runtime_put_noidle(bundle);
mutex_unlock(&codec->lock);
dev_err_ratelimited(dai->dev, "set_data_size failed:%d\n",
ret);
--
2.27.0


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