arch/m32r/kernel/irq.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * linux/arch/m32r/kernel/irq.c
   4  *
   5  *  Copyright (c) 2003, 2004  Hitoshi Yamamoto
   6  *  Copyright (c) 2004  Hirokazu Takata <takata at linux-m32r.org>
   7  */
   8
   9 /*
  10  *      linux/arch/i386/kernel/irq.c
  11  *
  12  *      Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
  13  *
  14  * This file contains the lowest level m32r-specific interrupt
  15  * entry and irq statistics code. All the remaining irq logic is
  16  * done by the generic kernel/irq/ code and in the
  17  * m32r-specific irq controller code.
  18  */
  19
  20 #include <linux/kernel_stat.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/module.h>
  23 #include <linux/uaccess.h>
  24
  25 /*
  26  * do_IRQ handles all normal device IRQs (the special
  27  * SMP cross-CPU interrupts have their own specific
  28  * handlers).
  29  */
  30 asmlinkage unsigned int do_IRQ(int irq, struct pt_regs *regs)
  31 {
  32         struct pt_regs *old_regs;
  33         old_regs = set_irq_regs(regs);
  34         irq_enter();
  35
  36 #ifdef CONFIG_DEBUG_STACKOVERFLOW
  37         /* FIXME M32R */
  38 #endif
  39         generic_handle_irq(irq);
  40         irq_exit();
  41         set_irq_regs(old_regs);
  42
  43         return 1;
  44 }