desc->validity = usb_alloc_urb(0, GFP_KERNEL);if(!desc->validity)gotoerr; desc->response = usb_alloc_urb(0, GFP_KERNEL);if(!desc->response)gotoerr; desc->command = usb_alloc_urb(0, GFP_KERNEL);if(!desc->command)gotoerr; desc->ubuf = kmalloc(desc->wMaxCommand, GFP_KERNEL);i...