On Tue Dec 3 21:20:11 2024 +0000, Ricardo Ribalda wrote:
> Make it explicit that the function is always called with ctrl_mutex
> being held.
>
> Suggested-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> Reviewed-by: Hans de Goede <hdego...@redhat.com>
> Signed-off-by: Ricardo Ribalda <riba...@chromium.org>
> Link:
> https://lore.kernel.org/r/20241203-uvc-fix-async-v6-4-26c867231...@chromium.org
> Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+hua...@kernel.org>
Patch committed.
Thanks,
Mauro Carvalho Chehab
drivers/media/usb/uvc/uvc_ctrl.c | 2 ++
1 file changed, 2 insertions(+)
---
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index 4837d8df9c03..21d5c62d1ac1 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -1981,6 +1981,8 @@ int uvc_ctrl_set(struct uvc_fh *handle,
s32 max;
int ret;
+ lockdep_assert_held(&chain->ctrl_mutex);
+
if (__uvc_query_v4l2_class(chain, xctrl->id, 0) >= 0)
return -EACCES;
