ia64: sn: Use irqd_mark_affinity_set() helper

irq_desc->status is going to be restricted. Provide a helper to set
that information in irq_data, where it belongs.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c
index 69578cf..cbb4e54 100644
--- a/arch/ia64/sn/kernel/irq.c
+++ b/arch/ia64/sn/kernel/irq.c
@@ -353,7 +353,6 @@
 	int cpu = nasid_slice_to_cpuid(nasid, slice);
 #ifdef CONFIG_SMP
 	int cpuphys;
-	struct irq_desc *desc;
 #endif
 
 	pci_dev_get(pci_dev);
@@ -370,12 +369,11 @@
 #ifdef CONFIG_SMP
 	cpuphys = cpu_physical_id(cpu);
 	set_irq_affinity_info(sn_irq_info->irq_irq, cpuphys, 0);
-	desc = irq_to_desc(sn_irq_info->irq_irq);
 	/*
 	 * Affinity was set by the PROM, prevent it from
 	 * being reset by the request_irq() path.
 	 */
-	desc->status |= IRQ_AFFINITY_SET;
+	irqd_mark_affinity_was_set(irq_get_irq_data(sn_irq_info->irq_irq));
 #endif
 }