提交 81578924 编写于 作者: P Prabhakar Lad 提交者: Mauro Carvalho Chehab

[media] media: davinci: vpif_display: fix the check on suspend/resume callbacks

It is possible to call STREAMON without having any buffers queued.
So vb2_is_streaming() can return true without start_streaming()
having been called. Only after at least one buffer has been
queued will start_streaming be called.

The check vb2_is_streaming() is incorrect as this would start
the DMA without having proper DMA pointers set up. this patch
uses vb2_start_streaming_called() instead to check is streaming
was called.
Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
上级 ead13033
......@@ -1400,7 +1400,7 @@ static int vpif_suspend(struct device *dev)
ch = vpif_obj.dev[i];
common = &ch->common[VPIF_VIDEO_INDEX];
if (!vb2_is_streaming(&common->buffer_queue))
if (!vb2_start_streaming_called(&common->buffer_queue))
continue;
mutex_lock(&common->lock);
......@@ -1432,7 +1432,7 @@ static int vpif_resume(struct device *dev)
ch = vpif_obj.dev[i];
common = &ch->common[VPIF_VIDEO_INDEX];
if (!vb2_is_streaming(&common->buffer_queue))
if (!vb2_start_streaming_called(&common->buffer_queue))
continue;
mutex_lock(&common->lock);
......
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