From: Hans Verkuil <hans.verk...@cisco.com>
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.verk...@cisco.com>
---
drivers/media/platform/mem2mem_testdev.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/media/platform/mem2mem_testdev.c
b/drivers/media/platform/mem2mem_testdev.c
index 8e2aed2..1ba1a83 100644
--- a/drivers/media/platform/mem2mem_testdev.c
+++ b/drivers/media/platform/mem2mem_testdev.c
@@ -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,
};
--
1.9.0
--
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