On function videobuf_pages_to_sg the statement sg_set_page(&sglist[0], pages[0], PAGE_SIZE - offset, offset) will failed if if size is less than PAGE_SIZE.
Signed-off-by: Newson Edouard <[email protected] --- drivers/media/video/videobuf-dma-sg.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c index ddb8f4b..f300dea 100644 --- a/drivers/media/video/videobuf-dma-sg.c +++ b/drivers/media/video/videobuf-dma-sg.c @@ -108,8 +108,9 @@ static struct scatterlist *videobuf_pages_to_sg(struct page **pages, if (PageHighMem(pages[0])) /* DMA to highmem pages might not work */ goto highmem; - sg_set_page(&sglist[0], pages[0], PAGE_SIZE - offset, offset); - size -= PAGE_SIZE - offset; + sg_set_page(&sglist[0], pages[0], + min_t(size_t, PAGE_SIZE - offset, size), offset); + size -= min_t(size_t, PAGE_SIZE - offset, size); for (i = 1; i < nr_pages; i++) { if (NULL == pages[i]) goto nopage; -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
