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V4L/DVB (12002): uvc: Fix for no return value check of uvc_ctrl_set() which calls mutex_lock_interruptible()

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Fix for no return value check of uvc_ctrl_set() which calls
mutex_lock_interruptible().

Signed-off-by: Robert Krakora <rob.krakora@messagenetsystems.com>
Acked-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Robert Krakora 2009-06-12 13:51:03 -03:00 committed by Mauro Carvalho Chehab
parent 6762d953a3
commit 1fcbcc47d3
1 changed files with 12 additions and 3 deletions
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15
drivers/media/video/uvc/uvc_v4l2.c
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@ -530,7 +530,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
memset(&xctrl, 0, sizeof xctrl);
xctrl.id = ctrl->id;
uvc_ctrl_begin(video);
ret = uvc_ctrl_begin(video);
if (ret < 0)
return ret;
ret = uvc_ctrl_get(video, &xctrl);
uvc_ctrl_rollback(video);
if (ret >= 0)
@ -547,7 +550,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
xctrl.id = ctrl->id;
xctrl.value = ctrl->value;
uvc_ctrl_begin(video);
ret = uvc_ctrl_begin(video);
if (ret < 0)
return ret;
ret = uvc_ctrl_set(video, &xctrl);
if (ret < 0) {
uvc_ctrl_rollback(video);
@ -566,7 +572,10 @@ static long uvc_v4l2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
struct v4l2_ext_control *ctrl = ctrls->controls;
unsigned int i;
uvc_ctrl_begin(video);
ret = uvc_ctrl_begin(video);
if (ret < 0)
return ret;
for (i = 0; i < ctrls->count; ++ctrl, ++i) {
ret = uvc_ctrl_get(video, ctrl);
if (ret < 0) {