STTY_RBUF_SIZE    316 dev/sbus/spif.c 		sp->sp_rbuf = malloc(STTY_RBUF_SIZE, M_DEVBUF, M_NOWAIT);
STTY_RBUF_SIZE    320 dev/sbus/spif.c 		sp->sp_rend = sp->sp_rbuf + STTY_RBUF_SIZE;