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[4.19,138/346] staging: greybus: codecs: Fix reference counter leak in error handling

Message ID 20201228124926.462859447@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Dec. 28, 2020, 12:47 p.m. UTC 
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(+)
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Patch

diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c
index 35acd55ca5ab7..6cbf69a57dfd9 100644
--- a/drivers/staging/greybus/audio_codec.c
+++ b/drivers/staging/greybus/audio_codec.c
@@ -489,6 +489,7 @@  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;
 	}
@@ -565,6 +566,7 @@  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);