media: platform: fcp: Fix a reference count leak.

[ Upstream commit 63e36a381d92a9cded97e90d481ee22566557dd1 ]

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code, causing incorrect ref count if
pm_runtime_put_noidle() is not called in error handling paths.
Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails.

Fixes: 6eaafbdb668b ("[media] v4l: rcar-fcp: Keep the coding style consistent")
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>

diff --git a/drivers/media/platform/rcar-fcp.c b/drivers/media/platform/rcar-fcp.c
index 0047d144c9326ba6ba72a8a052f8ff6a5fd7ec82..19502a1860cf5482e1d3b8e5957efe2c691f9922 100644 (file)
--- a/drivers/media/platform/rcar-fcp.c
+++ b/drivers/media/platform/rcar-fcp.c
@@ -106,8 +106,10 @@ int rcar_fcp_enable(struct rcar_fcp_device *fcp)
                return 0;
 
        ret = pm_runtime_get_sync(fcp->dev);
-       if (ret < 0)
+       if (ret < 0) {
+               pm_runtime_put_noidle(fcp->dev);
                return ret;
+       }
 
        return 0;
 }