arch/m68k/kernel/irq.c

   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/system.h>
  19 #include <asm/traps.h>
  20
  21 asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
  22 {
  23         struct pt_regs *oldregs = set_irq_regs(regs);
  24
  25         irq_enter();
  26         generic_handle_irq(irq);
  27         irq_exit();
  28
  29         set_irq_regs(oldregs);
  30 }
  31
  32
  33 /* The number of spurious interrupts */
  34 atomic_t irq_err_count;
  35
  36 int arch_show_interrupts(struct seq_file *p, int prec)
  37 {
  38         seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
  39         return 0;
  40 }