probe_irq_off

Section: Kernel Hacker's Manual (9)
Updated: probe_irq_off
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NAME

probe_irq_off - end an interrupt autodetect

SYNOPSIS

int probe_irq_off (unsigned long val);

ARGUMENTS

val: mask of potential interrupts (unused)

DESCRIPTION

Scans the unused interrupt lines and returns the line which appears to have triggered the interrupt. If no interrupt was found then zero is returned. If more than one interrupt is found then minus the first candidate is returned to indicate their is doubt.

The interrupt probe logic state is returned to its previous value.

BUGS

When used in a module (which arguably shouldnt happen) nothing prevents two IRQ probe callers from overlapping. The results of this are non-optimal.

This document was created by man2html, using the manual pages.
Time: 03:58:52 GMT, June 12, 2005