dev->sd_cx25840 = v4l2_i2c_new_subdev(&dev->v4l2_dev,
                                &dev->i2c_bus[2].i2c_adap,
                                "cx25840", "cx25840", 0x88 >> 1, NULL);
-               v4l2_subdev_call(dev->sd_cx25840, core, load_fw);
+               if (dev->sd_cx25840) {
+                       dev->sd_cx25840->grp_id = CX23885_HW_AV_CORE;
+                       v4l2_subdev_call(dev->sd_cx25840, core, load_fw);
+               }
                break;
        }
 
 
 #define call_all(dev, o, f, args...) \
        v4l2_device_call_all(&dev->v4l2_dev, 0, o, f, ##args)
 
-#define CX23885_HW_888_IR (1 << 0)
+#define CX23885_HW_888_IR  (1 << 0)
+#define CX23885_HW_AV_CORE (1 << 1)
 
 #define call_hw(dev, grpid, o, f, args...) \
        v4l2_device_call_all(&dev->v4l2_dev, grpid, o, f, ##args)