HelenOS sources

usb_device_get_info  536 uspace/lib/usbdev/src/devdrv.c 	const errno_t ret = usb_device_get_info(sess, usb_dev);
usb_device_get_info  559 uspace/lib/usbdev/src/devdrv.c 	errno_t ret = usb_device_get_info(sess, usb_dev);
HelenOS homepage, sources at GitHub