HelenOS sources

DRIVER_FUN_OFFLINE  363 uspace/lib/drv/generic/driver.c 		case DRIVER_FUN_OFFLINE:
DRIVER_FUN_OFFLINE  777 uspace/srv/devman/driver.c 	retval = async_req_1_0(exch, DRIVER_FUN_OFFLINE, handle);
HelenOS homepage, sources at GitHub