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[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: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Thomas Gleixner 2006-07-11 22:54:34 +01:00 committed by Russell King
parent b94ea6c08d
commit f7ede370a2
1 changed files with 10 additions and 0 deletions
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10
arch/arm/kernel/irq.c
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@ -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