media: ti-vpe: cal: Remove DMA queue empty check at start streaming time

The vb2 queue ensures that the start streaming operation will only be
called with a minimal number of buffers queued to the driver. There's
thus no need to manually check if the DMA queue is empty. Remove the
check.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/platform/ti-vpe/cal-video.c b/drivers/media/platform/ti-vpe/cal-video.c
index ad1e851..bfc3ba4 100644 (file)
--- a/drivers/media/platform/ti-vpe/cal-video.c
+++ b/drivers/media/platform/ti-vpe/cal-video.c
@@ -511,12 +511,6 @@ static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
        int ret;
 
        spin_lock_irq(&ctx->slock);
-       if (list_empty(&dma_q->active)) {
-               spin_unlock_irq(&ctx->slock);
-               ctx_dbg(3, ctx, "buffer queue is empty\n");
-               return -EIO;
-       }
-
        buf = list_entry(dma_q->active.next, struct cal_buffer, list);
        ctx->cur_frm = buf;
        ctx->next_frm = buf;