Message ID | 20161216012425.11179-12-laurent.pinchart+renesas@ideasonboard.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c index a0e88ad93f07..9409f458cf89 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c @@ -122,6 +122,9 @@ static void vb2_dc_prepare(void *buf_priv) if (!(buf->attrs & DMA_ATTR_NON_CONSISTENT)) return; + if (WARN_ON_ONCE(!sgt)) + return; + dma_sync_sg_for_device(buf->dev, sgt->sgl, sgt->orig_nents, buf->dma_dir); } @@ -138,6 +141,9 @@ static void vb2_dc_finish(void *buf_priv) if (!(buf->attrs & DMA_ATTR_NON_CONSISTENT)) return; + if (WARN_ON_ONCE(!sgt)) + return; + dma_sync_sg_for_cpu(buf->dev, sgt->sgl, sgt->orig_nents, buf->dma_dir); }