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[media] mem2mem_testdev: return pending buffers in stop_streaming()

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To keep the vb2 buffer administration in balance stop_streaming() must
return any pending buffers to the vb2 framework.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Hans Verkuil 2014-03-10 10:58:27 -03:00 committed by Mauro Carvalho Chehab
parent 782f36ca69
commit a773632c1f
1 changed files with 21 additions and 0 deletions
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21
drivers/media/platform/mem2mem_testdev.c
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@ -768,10 +768,31 @@ static void m2mtest_buf_queue(struct vb2_buffer *vb)
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vb);
}
static int m2mtest_stop_streaming(struct vb2_queue *q)
{
struct m2mtest_ctx *ctx = vb2_get_drv_priv(q);
struct vb2_buffer *vb;
unsigned long flags;
for (;;) {
if (V4L2_TYPE_IS_OUTPUT(q->type))
vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
else
vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
if (vb == NULL)
return 0;
spin_lock_irqsave(&ctx->dev->irqlock, flags);
v4l2_m2m_buf_done(vb, VB2_BUF_STATE_ERROR);
spin_unlock_irqrestore(&ctx->dev->irqlock, flags);
}
return 0;
}
static struct vb2_ops m2mtest_qops = {
.queue_setup = m2mtest_queue_setup,
.buf_prepare = m2mtest_buf_prepare,
.buf_queue = m2mtest_buf_queue,
.stop_streaming = m2mtest_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};