There is no point in having an incomplete copy of irq_set_affinity()
for the hotplug irq migration code.

Use the core function instead and while at it switch to
for_each_active_irq()

Signed-off-by: Thomas Gleixner <t...@linutronix.de>
Cc: James Hogan <james.ho...@imgtec.com>
Cc: metag <linux-metag@vger.kernel.org>
---
 arch/metag/kernel/irq.c |   20 +++-----------------
 1 file changed, 3 insertions(+), 17 deletions(-)

Index: tip/arch/metag/kernel/irq.c
===================================================================
--- tip.orig/arch/metag/kernel/irq.c
+++ tip/arch/metag/kernel/irq.c
@@ -261,18 +261,6 @@ int __init arch_probe_nr_irqs(void)
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-static void route_irq(struct irq_data *data, unsigned int irq, unsigned int 
cpu)
-{
-       struct irq_desc *desc = irq_to_desc(irq);
-       struct irq_chip *chip = irq_data_get_irq_chip(data);
-       unsigned long flags;
-
-       raw_spin_lock_irqsave(&desc->lock, flags);
-       if (chip->irq_set_affinity)
-               chip->irq_set_affinity(data, cpumask_of(cpu), false);
-       raw_spin_unlock_irqrestore(&desc->lock, flags);
-}
-
 /*
  * The CPU has been marked offline.  Migrate IRQs off this CPU.  If
  * the affinity settings do not allow other CPUs, force them onto any
@@ -281,10 +269,9 @@ static void route_irq(struct irq_data *d
 void migrate_irqs(void)
 {
        unsigned int i, cpu = smp_processor_id();
-       struct irq_desc *desc;
 
-       for_each_irq_desc(i, desc) {
-               struct irq_data *data = irq_desc_get_irq_data(desc);
+       for_each_active_irq(i) {
+               struct irq_data *data = irq_get_irq_data(i);
                unsigned int newcpu;
 
                if (irqd_is_per_cpu(data))
@@ -303,8 +290,7 @@ void migrate_irqs(void)
                        newcpu = cpumask_any_and(data->affinity,
                                                 cpu_online_mask);
                }
-
-               route_irq(data, i, newcpu);
+               irq_set_affinity(i, cpumask_of(newcpu));
        }
 }
 #endif /* CONFIG_HOTPLUG_CPU */


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