mn10300/irq: Use access helper irq_data_get_affinity_mask()

Use access helper irq_data_get_affinity_mask() to hide implementation
details of struct irq_desc.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-am33-list@redhat.com
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Link: http://lkml.kernel.org/r/1433145945-789-23-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/mn10300/kernel/cevt-mn10300.c

@@ -123,7 +123,7 @@ int __init init_clockevents(void)
 	{
 		struct irq_data *data;
 		data = irq_get_irq_data(cd->irq);
-		cpumask_copy(data->affinity, cpumask_of(cpu));
+		cpumask_copy(irq_data_get_affinity_mask(data), cpumask_of(cpu));
 		iact->flags |= IRQF_NOBALANCING;
 	}
 #endif

arch/mn10300/kernel/irq.c

@@ -87,7 +87,8 @@ static void mn10300_cpupic_mask_ack(struct irq_data *d)
 		tmp2 = GxICR(irq);
 
 		irq_affinity_online[irq] =
-			cpumask_any_and(d->affinity, cpu_online_mask);
+			cpumask_any_and(irq_data_get_affinity_mask(d),
+					cpu_online_mask);
 		CROSS_GxICR(irq, irq_affinity_online[irq]) =
 			(tmp & (GxICR_LEVEL | GxICR_ENABLE)) | GxICR_DETECT;
 		tmp = CROSS_GxICR(irq, irq_affinity_online[irq]);
@@ -124,7 +125,7 @@ static void mn10300_cpupic_unmask_clear(struct irq_data *d)
 	} else {
 		tmp = GxICR(irq);
 
-		irq_affinity_online[irq] = cpumask_any_and(d->affinity,
+		irq_affinity_online[irq] = cpumask_any_and(irq_data_get_affinity_mask(d),
 							   cpu_online_mask);
 		CROSS_GxICR(irq, irq_affinity_online[irq]) = (tmp & GxICR_LEVEL) | GxICR_ENABLE | GxICR_DETECT;
 		tmp = CROSS_GxICR(irq, irq_affinity_online[irq]);
@@ -316,15 +317,16 @@ void migrate_irqs(void)
 	self = smp_processor_id();
 	for (irq = 0; irq < NR_IRQS; irq++) {
 		struct irq_data *data = irq_get_irq_data(irq);
+		struct cpumask *mask = irq_data_get_affinity_mask(data);
 
 		if (irqd_is_per_cpu(data))
 			continue;
 
-		if (cpumask_test_cpu(self, data->affinity) &&
+		if (cpumask_test_cpu(self, mask) &&
 		    !cpumask_intersects(&irq_affinity[irq], cpu_online_mask)) {
 			int cpu_id;
 			cpu_id = cpumask_first(cpu_online_mask);
-			cpumask_set_cpu(cpu_id, data->affinity);
+			cpumask_set_cpu(cpu_id, mask);
 		}
 		/* We need to operate irq_affinity_online atomically. */
 		arch_local_cli_save(flags);
@@ -335,8 +337,7 @@ void migrate_irqs(void)
 			GxICR(irq) = x & GxICR_LEVEL;
 			tmp = GxICR(irq);
 
-			new = cpumask_any_and(data->affinity,
-					      cpu_online_mask);
+			new = cpumask_any_and(mask, cpu_online_mask);
 			irq_affinity_online[irq] = new;
 
 			CROSS_GxICR(irq, new) =