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authorHans de Goede <j.w.r.degoede@hhs.nl>2008-09-03 17:12:14 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-09-03 18:37:28 -0300
commit0f523c2ff6b5ab3b4412cf56dee77ac57be24103 (patch)
tree81898036d7d8a845e190257b2e2f02d48e74315a /drivers
parentf50ba1bed3cfd65d6899afc4cb77299ee5c297ae (diff)
V4L/DVB (8815): gspca: Fix problems with disabled controls.
Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl> Signed-off-by: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/video/gspca/gspca.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 33161e1e0bc..e7e73ec7134 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -869,7 +869,7 @@ static int vidioc_queryctrl(struct file *file, void *priv,
id &= V4L2_CTRL_ID_MASK;
id++;
for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) {
- if (id < gspca_dev->sd_desc->ctrls[i].qctrl.id)
+ if (gspca_dev->sd_desc->ctrls[i].qctrl.id < id)
continue;
if (ix < 0) {
ix = i;
@@ -908,6 +908,8 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
i++, ctrls++) {
if (ctrl->id != ctrls->qctrl.id)
continue;
+ if (gspca_dev->ctrl_dis & (1 << i))
+ return -EINVAL;
if (ctrl->value < ctrls->qctrl.minimum
|| ctrl->value > ctrls->qctrl.maximum)
return -ERANGE;
@@ -934,6 +936,8 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
i++, ctrls++) {
if (ctrl->id != ctrls->qctrl.id)
continue;
+ if (gspca_dev->ctrl_dis & (1 << i))
+ return -EINVAL;
if (mutex_lock_interruptible(&gspca_dev->usb_lock))
return -ERESTARTSYS;
ret = ctrls->get(gspca_dev, &ctrl->value);