Symbol: SWI_TTY
sys/dev/uart/uart_tty.c
435
swi_add(&tty_intr_event, uart_driver_name, uart_tty_intr, sc, SWI_TTY,
sys/dev/usb/usb_process.h
37
#define USB_PRI_HIGHEST PI_SWI(SWI_TTY)