From: Dan Carpenter <erro...@gmail.com>
Return an error if the controller is not found.
Signed-off-by: Dan Carpenter <erro...@gmail.com>
Cc: Luca Risolia <luca.riso...@studio.unibo.it>
Cc: Mauro Carvalho Chehab <mche...@infradead.org>
Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
---
drivers/media/video/zc0301/zc0301_core.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff -puN
drivers/media/video/zc0301/zc0301_core.c~drivers-media-video-zc0301-zc0301_corec-improve-error-handling
drivers/media/video/zc0301/zc0301_core.c
---
a/drivers/media/video/zc0301/zc0301_core.c~drivers-media-video-zc0301-zc0301_corec-improve-error-handling
+++ a/drivers/media/video/zc0301/zc0301_core.c
@@ -1153,7 +1153,7 @@ zc0301_vidioc_s_ctrl(struct zc0301_devic
if (copy_from_user(&ctrl, arg, sizeof(ctrl)))
return -EFAULT;
- for (i = 0; i < ARRAY_SIZE(s->qctrl); i++)
+ for (i = 0; i < ARRAY_SIZE(s->qctrl); i++) {
if (ctrl.id == s->qctrl[i].id) {
if (s->qctrl[i].flags & V4L2_CTRL_FLAG_DISABLED)
return -EINVAL;
@@ -1163,7 +1163,9 @@ zc0301_vidioc_s_ctrl(struct zc0301_devic
ctrl.value -= ctrl.value % s->qctrl[i].step;
break;
}
-
+ }
+ if (i == ARRAY_SIZE(s->qctrl))
+ return -EINVAL;
if ((err = s->set_ctrl(cam, &ctrl)))
return err;
_
--
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