If nothing needs to be done. Exit early.
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Tested-by: Yunke Cao <yunkec@xxxxxxxxxx>
Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
---
drivers/media/usb/uvc/uvc_v4l2.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 02fd5cbc3474..65dbb53b1e75 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -1081,6 +1081,9 @@ static int uvc_ioctl_g_ext_ctrls(struct file *file, void *fh,
u32 which;
int ret;
+ if (!ctrls->count)
+ return 0;
+
switch (ctrls->which) {
case V4L2_CTRL_WHICH_DEF_VAL:
case V4L2_CTRL_WHICH_CUR_VAL:
@@ -1121,6 +1124,9 @@ static int uvc_ioctl_s_try_ext_ctrls(struct uvc_fh *handle,
unsigned int i;
int ret;
+ if (!ctrls->count)
+ return 0;
+
ret = uvc_ctrl_check_access(chain, ctrls, ioctl);
if (ret < 0)
return ret;
--
2.47.0.338.g60cca15819-goog
