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V4L/DVB (11029): video: use videobuf_waiton() in sh_mobile_ceu free_buffer()

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Make sure videobuf_waiton() is used before freeing a buffer.
Without this fix we may return the buffer to the allocator
before the bus mastering operation is finished.

Reported-by: Matthieu CASTET <matthieu.castet@parrot.com>
Tested-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Magnus Damm 2009-03-13 06:08:20 -03:00 committed by Mauro Carvalho Chehab
parent f340e3f6f1
commit 97215cbd1b
1 changed files with 1 additions and 0 deletions
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drivers/media/video/sh_mobile_ceu_camera.c
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@ -174,6 +174,7 @@ static void free_buffer(struct videobuf_queue *vq,
if (in_interrupt())
BUG();
videobuf_waiton(&buf->vb, 0, 0);
videobuf_dma_contig_free(vq, &buf->vb);
dev_dbg(&icd->dev, "%s freed\n", __func__);
buf->vb.state = VIDEOBUF_NEEDS_INIT;