#ifndef _LINUX_IRQRETURN_H
  #define _LINUX_IRQRETURN_H

  /**
   * enum irqreturn
   * @IRQ_NONE		interrupt was not from this device
   * @IRQ_HANDLED		interrupt was handled by this device

   * @IRQ_WAKE_THREAD	handler requests to wake the handler thread

   */

  enum irqreturn {

  	IRQ_NONE		= (0 << 0),
  	IRQ_HANDLED		= (1 << 0),
  	IRQ_WAKE_THREAD		= (1 << 1),

  };

  typedef enum irqreturn irqreturn_t;
  #define IRQ_RETVAL(x)	((x) != IRQ_NONE)

  
  #endif