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kernel/linux-imx6_3.14.28/arch/arm/mach-gemini/idle.c 707 Bytes
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  /*
   * arch/arm/mach-gemini/idle.c
   */
  
  #include <linux/init.h>
  #include <asm/system.h>
  #include <asm/proc-fns.h>
  
  static void gemini_idle(void)
  {
  	/*
  	 * Because of broken hardware we have to enable interrupts or the CPU
  	 * will never wakeup... Acctualy it is not very good to enable
  	 * interrupts first since scheduler can miss a tick, but there is
  	 * no other way around this. Platforms that needs it for power saving
  	 * should enable it in init code, since by default it is
  	 * disabled.
  	 */
  
  	/* FIXME: Enabling interrupts here is racy! */
  	local_irq_enable();
  	cpu_do_idle();
  }
  
  static int __init gemini_idle_init(void)
  {
  	arm_pm_idle = gemini_idle;
  	return 0;
  }
  
  arch_initcall(gemini_idle_init);