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authorHans de Goede <hdegoede@redhat.com>2009-06-10 04:52:18 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-06-16 19:07:44 -0300
commita0001a289f667e254eba51f2f729ec677daba503 (patch)
treefbd62c78fbbd0c29bbb48e0b3c6e9f2839aad271 /drivers
parent3d48f7d09aadccf570a871ce0d5eec34092b38c1 (diff)
V4L/DVB (11972): gspca - main: Skip disabled controls.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> 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.c122
1 files changed, 61 insertions, 61 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index ae0e14033d6..f1108f1be83 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -983,43 +983,54 @@ out:
return ret;
}
+static const struct ctrl *get_ctrl(struct gspca_dev *gspca_dev,
+ int id)
+{
+ const struct ctrl *ctrls;
+ int i;
+
+ for (i = 0, ctrls = gspca_dev->sd_desc->ctrls;
+ i < gspca_dev->sd_desc->nctrls;
+ i++, ctrls++) {
+ if (gspca_dev->ctrl_dis & (1 << i))
+ continue;
+ if (id == ctrls->qctrl.id)
+ return ctrls;
+ }
+ return NULL;
+}
+
static int vidioc_queryctrl(struct file *file, void *priv,
struct v4l2_queryctrl *q_ctrl)
{
struct gspca_dev *gspca_dev = priv;
- int i, ix;
+ const struct ctrl *ctrls;
+ int i;
u32 id;
- ix = -1;
+ ctrls = NULL;
id = q_ctrl->id;
if (id & V4L2_CTRL_FLAG_NEXT_CTRL) {
id &= V4L2_CTRL_ID_MASK;
id++;
for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) {
- if (gspca_dev->sd_desc->ctrls[i].qctrl.id < id)
+ if (gspca_dev->ctrl_dis & (1 << i))
continue;
- if (ix < 0) {
- ix = i;
+ if (ctrls->qctrl.id < id)
continue;
+ if (ctrls != NULL) {
+ if (gspca_dev->sd_desc->ctrls[i].qctrl.id
+ > ctrls->qctrl.id)
+ continue;
}
- if (gspca_dev->sd_desc->ctrls[i].qctrl.id
- > gspca_dev->sd_desc->ctrls[ix].qctrl.id)
- continue;
- ix = i;
- }
- }
- for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) {
- if (id == gspca_dev->sd_desc->ctrls[i].qctrl.id) {
- ix = i;
- break;
+ ctrls = &gspca_dev->sd_desc->ctrls[i];
}
+ } else {
+ ctrls = get_ctrl(gspca_dev, id);
}
- if (ix < 0)
+ if (ctrls == NULL)
return -EINVAL;
- memcpy(q_ctrl, &gspca_dev->sd_desc->ctrls[ix].qctrl,
- sizeof *q_ctrl);
- if (gspca_dev->ctrl_dis & (1 << ix))
- q_ctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
+ memcpy(q_ctrl, ctrls, sizeof *q_ctrl);
return 0;
}
@@ -1028,56 +1039,45 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
{
struct gspca_dev *gspca_dev = priv;
const struct ctrl *ctrls;
- int i, ret;
+ int ret;
- for (i = 0, ctrls = gspca_dev->sd_desc->ctrls;
- i < gspca_dev->sd_desc->nctrls;
- 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;
- PDEBUG(D_CONF, "set ctrl [%08x] = %d", ctrl->id, ctrl->value);
- if (mutex_lock_interruptible(&gspca_dev->usb_lock))
- return -ERESTARTSYS;
- if (gspca_dev->present)
- ret = ctrls->set(gspca_dev, ctrl->value);
- else
- ret = -ENODEV;
- mutex_unlock(&gspca_dev->usb_lock);
- return ret;
- }
- return -EINVAL;
+ ctrls = get_ctrl(gspca_dev, ctrl->id);
+ if (ctrls == NULL)
+ return -EINVAL;
+
+ if (ctrl->value < ctrls->qctrl.minimum
+ || ctrl->value > ctrls->qctrl.maximum)
+ return -ERANGE;
+ PDEBUG(D_CONF, "set ctrl [%08x] = %d", ctrl->id, ctrl->value);
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock))
+ return -ERESTARTSYS;
+ if (gspca_dev->present)
+ ret = ctrls->set(gspca_dev, ctrl->value);
+ else
+ ret = -ENODEV;
+ mutex_unlock(&gspca_dev->usb_lock);
+ return ret;
}
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
struct gspca_dev *gspca_dev = priv;
-
const struct ctrl *ctrls;
- int i, ret;
+ int ret;
- for (i = 0, ctrls = gspca_dev->sd_desc->ctrls;
- i < gspca_dev->sd_desc->nctrls;
- 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;
- if (gspca_dev->present)
- ret = ctrls->get(gspca_dev, &ctrl->value);
- else
- ret = -ENODEV;
- mutex_unlock(&gspca_dev->usb_lock);
- return ret;
- }
- return -EINVAL;
+ ctrls = get_ctrl(gspca_dev, ctrl->id);
+ if (ctrls == NULL)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&gspca_dev->usb_lock))
+ return -ERESTARTSYS;
+ if (gspca_dev->present)
+ ret = ctrls->get(gspca_dev, &ctrl->value);
+ else
+ ret = -ENODEV;
+ mutex_unlock(&gspca_dev->usb_lock);
+ return ret;
}
/*fixme: have an audio flag in gspca_dev?*/