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media: rcar-vin: Fix a reference count leak.

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[ Upstream commit aaffa0126a ]

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus call pm_runtime_put_noidle()
if pm_runtime_get_sync() fails.

Fixes: 90dedce9bc ("media: rcar-vin: add function to manipulate Gen3 chsel value")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Qiushi Wu
2020-06-14 00:30:08 +02:00
committed by Greg Kroah-Hartman
parent 55d01160af
commit aa60f4ad07
1 changed files with 3 additions and 1 deletions
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4
drivers/media/platform/rcar-vin/rcar-dma.c
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@@ -1334,8 +1334,10 @@ int rvin_set_channel_routing(struct rvin_dev *vin, u8 chsel)
int ret; int ret;
ret = pm_runtime_get_sync(vin->dev); ret = pm_runtime_get_sync(vin->dev);
if (ret < 0) if (ret < 0) {
pm_runtime_put_noidle(vin->dev);
return ret; return ret;
}
/* Make register writes take effect immediately. */ /* Make register writes take effect immediately. */
vnmc = rvin_read(vin, VNMC_REG); vnmc = rvin_read(vin, VNMC_REG);