arm64: FIQs are unused

Nicolas Pitre · ctmarinas · commit f864b61ee49b · 2014-01-30T13:51:43.000Z
So any FIQ handling is superfluous at the moment.  The functions to
disable/enable FIQs is kept around if ever someone needs them in the
future, but existing calling sites including arch_cpu_idle_prepare()
may go for now.

Signed-off-by: Nicolas Pitre &lt;nico@linaro.org&gt;
Signed-off-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
@@ -85,11 +85,6 @@ EXPORT_SYMBOL_GPL(pm_power_off);
 void (*arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd);
 EXPORT_SYMBOL_GPL(arm_pm_restart);
 
-void arch_cpu_idle_prepare(void)
-{
-	local_fiq_enable();
-}
-
 /*
  * This is our default idle handler.
  */
@@ -138,7 +133,6 @@ void machine_restart(char *cmd)
 
 	/* Disable interrupts first */
 	local_irq_disable();
-	local_fiq_disable();
 
 	/* Now call the architecture specific reboot code. */
 	if (arm_pm_restart)
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
@@ -161,7 +161,6 @@ asmlinkage void secondary_start_kernel(void)
 	complete(&cpu_running);
 
 	local_irq_enable();
-	local_fiq_enable();
 	local_async_enable();
 
 	/*
@@ -495,7 +494,6 @@ static void ipi_cpu_stop(unsigned int cpu)
 
 	set_cpu_online(cpu, false);
 
-	local_fiq_disable();
 	local_irq_disable();
 
 	while (1)
