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kernel/linux-rt-4.4.41/arch/sparc/include/asm/irq_32.h 487 Bytes
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  /* irq.h: IRQ registers on the Sparc.
   *
   * Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net)
   */
  
  #ifndef _SPARC_IRQ_H
  #define _SPARC_IRQ_H
  
  /* Allocated number of logical irq numbers.
   * sun4d boxes (ss2000e) should be OK with ~32.
   * Be on the safe side and make room for 64
   */
  #define NR_IRQS    64
  
  #include <linux/interrupt.h>
  
  #define irq_canonicalize(irq)	(irq)
  
  void __init init_IRQ(void);
  void __init sun4d_init_sbi_irq(void);
  
  #define NO_IRQ		0xffffffff
  
  #endif