[media] omap3isp: queue: Fix the dma_map_sg() return value check

dma_map_sg() can merge sglist entries, and can thus return a number of
mapped entries different than the original value. Don't consider this as
an error.

Signed-off-by: Laurent Pinchart <[email protected]>
Acked-by: Sakari Ailus <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

diff --git a/drivers/media/platform/omap3isp/ispqueue.c b/drivers/media/platform/omap3isp/ispqueue.c
index 2fd254f4dbe2e8c332d7f675cfa610ff9b97ab67..479d348bb510b80d23a255ca2b930d59a9649c2d 100644 (file)
--- a/drivers/media/platform/omap3isp/ispqueue.c
+++ b/drivers/media/platform/omap3isp/ispqueue.c
@@ -465,7 +465,7 @@ static int isp_video_buffer_prepare(struct isp_video_buffer *buf)
                          ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
                ret = dma_map_sg(buf->queue->dev, buf->sgt.sgl,
                                 buf->sgt.orig_nents, direction);
-               if (ret != buf->sgt.orig_nents) {
+               if (ret <= 0) {
                        ret = -EFAULT;
                        goto done;
                }