1 /*
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>
18 #include <asm/traps.h>
19 
do_IRQ(int irq,struct pt_regs * regs)20 asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
21 {
22 	struct pt_regs *oldregs = set_irq_regs(regs);
23 
24 	irq_enter();
25 	generic_handle_irq(irq);
26 	irq_exit();
27 
28 	set_irq_regs(oldregs);
29 }
30 
31 
32 /* The number of spurious interrupts */
33 atomic_t irq_err_count;
34 
arch_show_interrupts(struct seq_file * p,int prec)35 int 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 }
40