man request_RTirq () - install an interrupt handler

NAME

request_RTirq - install an interrupt handler

SYNOPSIS

WARNING -  
This is an RTLinux v1.x compatibility function.   
For new programs, please see rtl_request_irq(3). 
 
#define MODULE 
#include <linux/module.h> 
#include <linux/kernel.h> 
#include <linux/version.h> 
#include <linux/errno.h> 
#include <linux/rtf.h> 
#include <asm/rt_irq.h> 
 
int request_RTirq(unsigned int irq, void (*handler)(void));

WARNING

This is an RTLinux v1.x compatibility function. For new programs, please see rtl_request_irq(3).

DESCRIPTION

request_RTirq installs handler as an interrupt service routine for IRQ level irq. handler is then invoked whenever interrupt number irq occurs. The interrupt service routine can be uninstalled using free_RTirq.

RETURN VALUE

On success, 0 is returned. On failure, a negative value is returned as described below.

ERRORS

-EINVAL
irq is not a valid IRQ number, or handler is NULL.
-EBUSY
irq already has a handler. You must first call free_RTirq to make the IRQ available.

AUTHOR

Jerry Epplin, modified by Michael Barabanov (baraban@fsmlabs.com (link to URL mailto:baraban@fsmlabs.com) )

SEE ALSO

free_RTirq(3) (link to URL free_RTirq.3.html)

©1997 Jerry Epplin.

Modifications for RTLinux 2.x and 3.x by Michael Barabanov. ©2001 FSMLabs Inc.

All rights reserved.