blob: 9ab4f550342e5de11c528f55781432675ffd66bf [file] [log] [blame]
Greg Ungerer2502b6672007-07-19 01:49:12 -07001/*
2 * irq.c
3 *
4 * (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com>
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive
8 * for more details.
9 */
10
11#include <linux/types.h>
12#include <linux/init.h>
13#include <linux/kernel.h>
14#include <linux/kernel_stat.h>
15#include <linux/interrupt.h>
16#include <linux/irq.h>
17#include <linux/seq_file.h>
Greg Ungerer2502b6672007-07-19 01:49:12 -070018#include <asm/traps.h>
19
20asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
21{
22 struct pt_regs *oldregs = set_irq_regs(regs);
23
24 irq_enter();
Greg Ungerer454dc5f2009-03-20 09:53:59 +100025 generic_handle_irq(irq);
Greg Ungerer2502b6672007-07-19 01:49:12 -070026 irq_exit();
27
28 set_irq_regs(oldregs);
29}
Geert Uytterhoeven8c9f08f2011-07-13 20:29:24 +020030
31
32/* The number of spurious interrupts */
33atomic_t irq_err_count;
34
35int arch_show_interrupts(struct seq_file *p, int prec)
36{
37 seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
38 return 0;
39}