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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2011-04-07 18:30:14 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-04-19 16:29:56 +0200 |
| commit | 2578dfb7f767076baf04eaf5fbf35a75afb9a1a7 (patch) | |
| tree | 72dd9590490c76472c9a518249c219b91a4008ec /drivers/media/video/omap3isp | |
| parent | [media] v4l: Don't register media entities for subdev device nodes (diff) | |
| download | linux-2578dfb7f767076baf04eaf5fbf35a75afb9a1a7.tar.xz linux-2578dfb7f767076baf04eaf5fbf35a75afb9a1a7.zip | |
[media] omap3isp: queue: Don't corrupt buf->npages when get_user_pages() fails
get_user_pages() can return a negative error code when it fails. Set
buf->npages to 0 in that case, to prevent isp_video_buffer_cleanup()
from releasing invalid pages.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/omap3isp')
| -rw-r--r-- | drivers/media/video/omap3isp/ispqueue.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/video/omap3isp/ispqueue.c b/drivers/media/video/omap3isp/ispqueue.c index c91e56a5791e..9c317148205f 100644 --- a/drivers/media/video/omap3isp/ispqueue.c +++ b/drivers/media/video/omap3isp/ispqueue.c @@ -339,7 +339,7 @@ static int isp_video_buffer_prepare_user(struct isp_video_buffer *buf) up_read(¤t->mm->mmap_sem); if (ret != buf->npages) { - buf->npages = ret; + buf->npages = ret < 0 ? 0 : ret; isp_video_buffer_cleanup(buf); return -EFAULT; } |