request_RTirq(3)

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)

SEE ALSO

free_RTirq(3)

1997 Jerry Epplin.

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

All rights reserved.