x86: Xen: Use the core irq stats function

Let the core do the irq_desc resolution.

No functional change.

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: David Vrabel <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Cc: Xen <[email protected]>
Cc: x86 <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>

Author: KAGA-KOKO

arch/x86/xen/spinlock.c

@@ -183,7 +183,7 @@ __visible void xen_lock_spinning(struct arch_spinlock *lock, __ticket_t want)
 
 	local_irq_save(flags);
 
-	kstat_incr_irqs_this_cpu(irq, irq_to_desc(irq));
+	kstat_incr_irq_this_cpu(irq);
 out:
 	cpumask_clear_cpu(cpu, &waiting_cpus);
 	w->lock = NULL;