From 0f523c2ff6b5ab3b4412cf56dee77ac57be24103 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 3 Sep 2008 17:12:14 -0300 Subject: [PATCH] V4L/DVB (8815): gspca: Fix problems with disabled controls. Signed-off-by: Hans de Goede Signed-off-by: Jean-Francois Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/gspca.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) 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); -- 2.41.1