diff options
Diffstat (limited to 'drivers/media/video/gspca/gspca.c')
| -rw-r--r-- | drivers/media/video/gspca/gspca.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index 28842ed24c09..33161e1e0bcc 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -856,37 +856,44 @@ static int vidioc_querycap(struct file *file, void *priv, return 0; } -/* the use of V4L2_CTRL_FLAG_NEXT_CTRL asks for the controls to be sorted */ static int vidioc_queryctrl(struct file *file, void *priv, struct v4l2_queryctrl *q_ctrl) { struct gspca_dev *gspca_dev = priv; - int i; + int i, ix; u32 id; + ix = -1; 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 (id >= gspca_dev->sd_desc->ctrls[i].qctrl.id) { - memcpy(q_ctrl, - &gspca_dev->sd_desc->ctrls[i].qctrl, - sizeof *q_ctrl); - return 0; + if (id < gspca_dev->sd_desc->ctrls[i].qctrl.id) + continue; + if (ix < 0) { + ix = i; + continue; } + if (gspca_dev->sd_desc->ctrls[i].qctrl.id + > gspca_dev->sd_desc->ctrls[ix].qctrl.id) + continue; + ix = i; } - return -EINVAL; } for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) { if (id == gspca_dev->sd_desc->ctrls[i].qctrl.id) { - memcpy(q_ctrl, - &gspca_dev->sd_desc->ctrls[i].qctrl, - sizeof *q_ctrl); - return 0; + ix = i; + break; } } - return -EINVAL; + if (ix < 0) + 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; + return 0; } static int vidioc_s_ctrl(struct file *file, void *priv, |