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[4.9,37/97] media: exynos4-is: Fix recursive locking in isp_video_release()

Message ID 20200122092802.518015494@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Jan. 22, 2020, 9:28 a.m. UTC 
From: Seung-Woo Kim <sw0312.kim@samsung.com>

commit 704c6c80fb471d1bb0ef0d61a94617d1d55743cd upstream.

>From isp_video_release(), &isp->video_lock is held and subsequent
vb2_fop_release() tries to lock vdev->lock which is same with the
previous one. Replace vb2_fop_release() with _vb2_fop_release() to
fix the recursive locking.

Fixes: 1380f5754cb0 ("[media] videobuf2: Add missing lock held on vb2_fop_release")
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/media/platform/exynos4-is/fimc-isp-video.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

--- a/drivers/media/platform/exynos4-is/fimc-isp-video.c
+++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c
@@ -316,7 +316,7 @@  static int isp_video_release(struct file
 		ivc->streaming = 0;
 	}
 
-	vb2_fop_release(file);
+	_vb2_fop_release(file, NULL);
 
 	if (v4l2_fh_is_singular_file(file)) {
 		fimc_pipeline_call(&ivc->ve, close);