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media: vim2m: use cancel_delayed_work_sync instead of flush_schedule_work

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[ Upstream commit 52117be68b ]

The use of flush_schedule_work() made no sense and caused a syzkaller error.
Replace with the correct cancel_delayed_work_sync().

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reported-by: syzbot+69780d144754b8071f4b@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>      # for v4.20 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Hans Verkuil
2018-11-07 09:04:54 -05:00
committed by Greg Kroah-Hartman
parent a7b6f95f3c
commit f999485109
1 changed files with 2 additions and 1 deletions
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3
drivers/media/platform/vim2m.c
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@@ -797,10 +797,11 @@ static int vim2m_start_streaming(struct vb2_queue *q, unsigned count)
static void vim2m_stop_streaming(struct vb2_queue *q)
{
struct vim2m_ctx *ctx = vb2_get_drv_priv(q);
struct vim2m_dev *dev = ctx->dev;
struct vb2_v4l2_buffer *vbuf;
unsigned long flags;
flush_scheduled_work();
cancel_delayed_work_sync(&dev->work_run);
for (;;) {
if (V4L2_TYPE_IS_OUTPUT(q->type))
vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);