From f24350b48eed2d5518a5f0c2c95d51a655387457 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sun, 28 Mar 2010 08:49:20 -0300 Subject: [PATCH] V4L/DVB: video/zc0301: improve error handling Return an error if the controller is not found. Signed-off-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/zc0301/zc0301_core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/video/zc0301/zc0301_core.c b/drivers/media/video/zc0301/zc0301_core.c index e44e4b5f3e50..bb51cfb0c647 100644 --- a/drivers/media/video/zc0301/zc0301_core.c +++ b/drivers/media/video/zc0301/zc0301_core.c @@ -1153,7 +1153,7 @@ zc0301_vidioc_s_ctrl(struct zc0301_device* cam, void __user * arg) 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_device* cam, void __user * arg) 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;