Commit f7ede370 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Russell King
Browse files

[ARM] 3728/1: Restore missing CPU Hotplug irq helper 



Patch from Thomas Gleixner

From: Thomas Gleixner <tglx@linutronix.de>

The genirq conversion of ARM lost a CPU Hotplug helper function.
Restore it.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent b94ea6c0

arch/arm/kernel/irq.c

+10 −0
Original line number Diff line number Diff line
@@ -167,6 +167,16 @@ void __init init_IRQ(void) 
}



#ifdef CONFIG_HOTPLUG_CPU



static void route_irq(struct irqdesc *desc, unsigned int irq, unsigned int cpu)

{

	pr_debug("IRQ%u: moving from cpu%u to cpu%u\n", irq, desc->cpu, cpu);



	spin_lock_irq(&desc->lock);

	desc->chip->set_affinity(irq, cpumask_of_cpu(cpu));

	spin_unlock_irq(&desc->lock);

}



/*

 * The CPU has been marked offline.  Migrate IRQs off this CPU.  If

 * the affinity settings do not allow other CPUs, force them onto any