[PATCH] genirq: cleanup: merge irq_affinity[] into irq_desc[]

Consolidation: remove the irq_affinity[NR_IRQS] array and move it into the
irq_desc[NR_IRQS].affinity field.

[akpm@osdl.org: sparc64 build fix]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index ec9d243..63af36c 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -56,7 +56,7 @@
 		cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0);
 	last_cpu = cpu;
 
-	irq_affinity[irq] = cpumask_of_cpu(cpu);
+	irq_desc[irq].affinity = cpumask_of_cpu(cpu);
 	irq_desc[irq].chip->set_affinity(irq, cpumask_of_cpu(cpu));
 	return 0;
 }