ARM: GIC: move enablement of PPI interrupts to gic.c

Avoid adding nasty genirq-specific code to local timers to enable PPI
interrupts.  Instead, provide a gic function to do this.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/common/gic.c

@@ -331,6 +331,16 @@ void __cpuinit gic_secondary_init(unsigned int gic_nr)
 	gic_cpu_init(&gic_data[gic_nr]);
 }
 
+void __cpuinit gic_enable_ppi(unsigned int irq)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+	irq_to_desc(irq)->status |= IRQ_NOPROBE;
+	gic_unmask_irq(irq);
+	local_irq_restore(flags);
+}
+
 #ifdef CONFIG_SMP
 void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
 {

arch/arm/include/asm/hardware/gic.h

@@ -39,6 +39,7 @@ void gic_init(unsigned int, unsigned int, void __iomem *, void __iomem *);
 void gic_secondary_init(unsigned int);
 void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
 void gic_raise_softirq(const struct cpumask *mask, unsigned int irq);
+void gic_enable_ppi(unsigned int);
 #endif
 
 #endif

arch/arm/kernel/smp_twd.c

@@ -127,8 +127,6 @@ static void __cpuinit twd_calibrate_rate(void)
  */
 void __cpuinit twd_timer_setup(struct clock_event_device *clk)
 {
-	unsigned long flags;
-
 	twd_calibrate_rate();
 
 	clk->name = "local_timer";
@@ -143,10 +141,7 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk)
 	clk->min_delta_ns = clockevent_delta2ns(0xf, clk);
 
 	/* Make sure our local interrupt controller has this enabled */
-	local_irq_save(flags);
-	irq_to_desc(clk->irq)->status |= IRQ_NOPROBE;
-	get_irq_chip(clk->irq)->unmask(clk->irq);
-	local_irq_restore(flags);
+	gic_enable_ppi(clk->irq);
 
 	clockevents_register_device(clk);
 }