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From: Yufen Yu <yuyufen@huawei.com>
To: <alsa-devel@alsa-project.org>
Cc: yukuai3@huawei.com, tiwai@suse.com, yuyufen@huawei.com
Subject: [PATCH] ALSA: ac97: fix PM reference leak in ac97_bus_remove()
Date: Mon, 24 May 2021 05:38:11 -0400	[thread overview]
Message-ID: <20210524093811.612302-1-yuyufen@huawei.com> (raw)

pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yufen Yu <yuyufen@huawei.com>
---
 sound/ac97/bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/ac97/bus.c b/sound/ac97/bus.c
index d9077e91382b..6ddf646cda65 100644
--- a/sound/ac97/bus.c
+++ b/sound/ac97/bus.c
@@ -520,7 +520,7 @@ static int ac97_bus_remove(struct device *dev)
 	struct ac97_codec_driver *adrv = to_ac97_driver(dev->driver);
 	int ret;
 
-	ret = pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
 	if (ret < 0)
 		return ret;
 
-- 
2.25.4


             reply	other threads:[~2021-05-25  7:37 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-24  9:38 Yufen Yu [this message]
2021-05-25  6:59 ` [PATCH] ALSA: ac97: fix PM reference leak in ac97_bus_remove() Takashi Iwai

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