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[media] pwc: Handle V4L2_CTRL_FLAG_NEXT_CTRL in queryctrl

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Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-Francois Moine 2011-03-27 04:11:48 -03:00 committed by Mauro Carvalho Chehab
parent fd20650849
commit 6588687a60
1 changed files with 20 additions and 1 deletions
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21
drivers/media/video/pwc/pwc-v4l.c
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@ -379,8 +379,27 @@ static int pwc_s_input(struct file *file, void *fh, unsigned int i)
static int pwc_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *c)
{
int i;
int i, idx;
u32 id;
id = c->id;
if (id & V4L2_CTRL_FLAG_NEXT_CTRL) {
id &= V4L2_CTRL_ID_MASK;
id++;
idx = -1;
for (i = 0; i < ARRAY_SIZE(pwc_controls); i++) {
if (pwc_controls[i].id < id)
continue;
if (idx >= 0
&& pwc_controls[i].id > pwc_controls[idx].id)
continue;
idx = i;
}
if (idx < 0)
return -EINVAL;
memcpy(c, &pwc_controls[idx], sizeof pwc_controls[0]);
return 0;
}
for (i = 0; i < sizeof(pwc_controls) / sizeof(struct v4l2_queryctrl); i++) {
if (pwc_controls[i].id == c->id) {
PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) found\n");