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V4L/DVB (12071): gspca: fix NULL pointer deref in query_ctrl 

gspca: fix NULL pointer deref in query_ctrl

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans de Goede 2009-06-13 18:56:22 -03:00 committed by Mauro Carvalho Chehab
parent 14422f9dd8
commit b8bfb5fb34
1 changed files with 3 additions and 5 deletions
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8
drivers/media/video/gspca/gspca.c
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@ -1042,13 +1042,11 @@ static int vidioc_queryctrl(struct file *file, void *priv,
for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) {
if (gspca_dev->ctrl_dis & (1 << i))
continue;
if (ctrls->qctrl.id < id)
if (gspca_dev->sd_desc->ctrls[i].qctrl.id < id)
continue;
if (ctrls != NULL) {
if (gspca_dev->sd_desc->ctrls[i].qctrl.id
if (ctrls && gspca_dev->sd_desc->ctrls[i].qctrl.id
> ctrls->qctrl.id)
continue;
}
continue;
ctrls = &gspca_dev->sd_desc->ctrls[i];
}
} else {