static void usb_rx_callback(struct urb *urb)
 {
        struct imon_context *context;
-       unsigned char *buf;
-       int len;
        int intfnum = 0;
 
        if (!urb)
        if (!context)
                return;
 
-       buf = urb->transfer_buffer;
-       len = urb->actual_length;
-
        switch (urb->status) {
        case -ENOENT:           /* usbcore unlink successful! */
                return;
        int ir_ep_found = 0;
        int alloc_status = 0;
        int vfd_proto_6p = 0;
-       int code_length;
        struct imon_context *context = NULL;
        int i;
        u16 vendor, product;
        else
                context->display = 1;
 
-       code_length = BUF_CHUNK_SIZE * 8;
-
        usbdev     = usb_get_dev(interface_to_usbdev(interface));
        iface_desc = interface->cur_altsetting;
        num_endpts = iface_desc->desc.bNumEndpoints;
 
        strcpy(driver->name, MOD_NAME);
        driver->minor = -1;
-       driver->code_length = sizeof(int) * 8;
+       driver->code_length = BUF_CHUNK_SIZE * 8;
        driver->sample_rate = 0;
        driver->features = LIRC_CAN_REC_MODE2;
        driver->data = context;