[Patch 17/19] media: ti-vpe: cal: Fix a WARN issued when start streaming fails

[Benoit Parrot]

When start_streaming fails after the buffers have been queued we have to
make sure all buffers are returned to user-space properly otherwise a
v4l2 level WARN is generated.

Signed-off-by: Benoit Parrot <bpar...@ti.com>
---
 drivers/media/platform/ti-vpe/cal.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/platform/ti-vpe/cal.c 
b/drivers/media/platform/ti-vpe/cal.c
index a0ff67412410..b55987ee70dd 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -1702,10 +1702,15 @@ static int cal_start_streaming(struct vb2_queue *vq, 
unsigned int count)
        return 0;
 
 err:
+       spin_lock_irqsave(&ctx->slock, flags);
+       vb2_buffer_done(&ctx->cur_frm->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
+       ctx->cur_frm = NULL;
+       ctx->next_frm = NULL;
        list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
                list_del(&buf->list);
                vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
        }
+       spin_unlock_irqrestore(&ctx->slock, flags);
        return ret;
 }
 
-- 
2.17.1