On Fri, Oct 04, 2019 at 12:24:16PM -0500, Benoit Parrot wrote: > @@ -2657,6 +2669,12 @@ static int ov5640_init_controls(struct ov5640_dev *sensor) > /* we can use our own mutex for the ctrl lock */ > hdl->lock = &sensor->lock; > > + /* Clock related controls */ > + ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_PIXEL_RATE, > + 0, INT_MAX, 1, > + ov5640_calc_pixel_rate(sensor)); > + ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY; Please check ctrls->pixel_rate first; it may be NULL here. > + > /* Auto/manual white balance */ > ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops, > V4L2_CID_AUTO_WHITE_BALANCE, -- Sakari Ailus sakari.ailus@xxxxxxxxxxxxxxx