ia64: Use the core irq stats function

Let the core do the irq_desc resolution.

No functional change.

Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: ia64 <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>

Author: KAGA-KOKO

arch/ia64/kernel/irq_ia64.c

@@ -489,14 +489,13 @@ ia64_handle_irq (ia64_vector vector, struct pt_regs *regs)
 	ia64_srlz_d();
 	while (vector != IA64_SPURIOUS_INT_VECTOR) {
 		int irq = local_vector_to_irq(vector);
-		struct irq_desc *desc = irq_to_desc(irq);
 
 		if (unlikely(IS_LOCAL_TLB_FLUSH(vector))) {
 			smp_local_flush_tlb();
-			kstat_incr_irqs_this_cpu(irq, desc);
+			kstat_incr_irq_this_cpu(irq);
 		} else if (unlikely(IS_RESCHEDULE(vector))) {
 			scheduler_ipi();
-			kstat_incr_irqs_this_cpu(irq, desc);
+			kstat_incr_irq_this_cpu(irq);
 		} else {
 			ia64_setreg(_IA64_REG_CR_TPR, vector);
 			ia64_srlz_d();
@@ -549,13 +548,12 @@ void ia64_process_pending_intr(void)
 	  */
 	while (vector != IA64_SPURIOUS_INT_VECTOR) {
 		int irq = local_vector_to_irq(vector);
-		struct irq_desc *desc = irq_to_desc(irq);
 
 		if (unlikely(IS_LOCAL_TLB_FLUSH(vector))) {
 			smp_local_flush_tlb();
-			kstat_incr_irqs_this_cpu(irq, desc);
+			kstat_incr_irq_this_cpu(irq);
 		} else if (unlikely(IS_RESCHEDULE(vector))) {
-			kstat_incr_irqs_this_cpu(irq, desc);
+			kstat_incr_irq_this_cpu(irq);
 		} else {
 			struct pt_regs *old_regs = set_irq_regs(NULL);