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 <newsondev@xxxxxxxxx
---
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
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