they do:
---{from 'man request_irq'--------------------------------------------->
REQUEST_IRQ(9) Kernel Reference Guide REQUEST_IRQ(9)
NAME
request_irq, free_irq, enable_irq, disable_irq - set up and
remove a hardware interrupt handler, enable and disable interrupt.
SYNOPSIS
#include <linux/sched.h>
#include <linux/signal.h>
#include <asm/irq.h>
int request_irq(unsigned int irq,
<-----------------------------------------------------------------------
just get the latest and greatest man pages from:
ftp://ftp.win.tue.nl:/pub/linux/man
and dont forget to drop a note there if you notice some wierdness in them.
-- mingo