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| author | Arnout Vandecappelle <arnout@mind.be> | 2010-03-18 01:53:04 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-19 19:58:40 +0400 |
| commit | fc7f8fd42c2b934ac348995e0c530c917fc277d5 (patch) | |
| tree | d83e4e80cbf38e3a64f1c6d32347e50535b0778a | |
| parent | c06b062bea411f616b0890d502044c7871d5332f (diff) | |
| download | linux-fc7f8fd42c2b934ac348995e0c530c917fc277d5.tar.xz | |
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 <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/videobuf-dma-sg.c | 4 |
1 files 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; } |