diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2010-06-18 18:31:24 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-08-02 22:34:10 +0400 |
| commit | b30ece53946ad2b79304ee5cfdb18b361dc3a3fc (patch) | |
| tree | 80dc24b56b1a38d03d50e8077ae275ec02391847 /drivers/media/video/uvc/uvc_v4l2.c | |
| parent | 1b4e21c4f62eae6bdcb3e7bfdfc52171a24f3689 (diff) | |
| download | linux-b30ece53946ad2b79304ee5cfdb18b361dc3a3fc.tar.xz | |
V4L/DVB: uvcvideo: Don't use stack-based buffers for USB transfers
Data buffers on the stack are not allowed for USB I/O. Use dynamically
allocated buffers instead when querying control length and control
capabilities.
The control capabilities are now also stored in the uvc_control
structure.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/uvc/uvc_v4l2.c')
| -rw-r--r-- | drivers/media/video/uvc/uvc_v4l2.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/video/uvc/uvc_v4l2.c b/drivers/media/video/uvc/uvc_v4l2.c index 485a89912cef..369ce06be035 100644 --- a/drivers/media/video/uvc/uvc_v4l2.c +++ b/drivers/media/video/uvc/uvc_v4l2.c @@ -1028,6 +1028,9 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg) if (!capable(CAP_SYS_ADMIN)) return -EPERM; + if (xinfo->size == 0) + return -EINVAL; + info = kzalloc(sizeof *info, GFP_KERNEL); if (info == NULL) return -ENOMEM; |