[PATCH 1/2] staging: greybus: codecs: Fix reference counter leak in error handling

Zhang Qilong zhangqilong3 at huawei.com
Mon Nov 9 13:13:46 UTC 2020


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 at huawei.com>
---
 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 17a39ed63769..b589cf6b1d03 100644
--- a/drivers/staging/greybus/audio_codec.c
+++ b/drivers/staging/greybus/audio_codec.c
@@ -471,6 +471,7 @@ 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;
 	}
@@ -545,6 +546,7 @@ 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);
 		return ret;
-- 
2.25.4



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