From fc7f8fd42c2b934ac348995e0c530c917fc277d5 Mon Sep 17 00:00:00 2001 From: Arnout Vandecappelle Date: Wed, 17 Mar 2010 19:53:04 -0300 Subject: [PATCH] V4L/DVB: buf-dma-sg.c: don't assume nr_pages == sglen videobuf_pages_to_sg() and videobuf_vmalloc_to_sg() happen to create a scatterlist element for every page. However, this is not true for bus addresses, so other functions shouldn't rely on the length of the scatter list being equal to nr_pages. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/videobuf-dma-sg.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c index b49f1e23298a..8359e6badd36 100644 --- a/drivers/media/video/videobuf-dma-sg.c +++ b/drivers/media/video/videobuf-dma-sg.c @@ -286,7 +286,7 @@ int videobuf_dma_unmap(struct videobuf_queue *q, struct videobuf_dmabuf *dma) if (!dma->sglen) return 0; - dma_unmap_sg(q->dev, dma->sglist, dma->nr_pages, dma->direction); + dma_unmap_sg(q->dev, dma->sglist, dma->sglen, dma->direction); vfree(dma->sglist); dma->sglist = NULL; @@ -537,7 +537,7 @@ static int __videobuf_sync(struct videobuf_queue *q, MAGIC_CHECK(mem->dma.magic, MAGIC_DMABUF); dma_sync_sg_for_cpu(q->dev, mem->dma.sglist, - mem->dma.nr_pages, mem->dma.direction); + mem->dma.sglen, mem->dma.direction); return 0; } -- 2.20.1