xen/events: remove the unused resend_irq_on_evtchn()

resend_irq_on_evtchn() was only used by ia64 (which no longer has Xen
support).
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

drivers/xen/events/events_base.c

@@ -1344,26 +1344,6 @@ static int set_affinity_irq(struct irq_data *data, const struct cpumask *dest,
 	return rebind_irq_to_cpu(data->irq, tcpu);
 }
 
-static int retrigger_evtchn(int evtchn)
-{
-	int masked;
-
-	if (!VALID_EVTCHN(evtchn))
-		return 0;
-
-	masked = test_and_set_mask(evtchn);
-	set_evtchn(evtchn);
-	if (!masked)
-		unmask_evtchn(evtchn);
-
-	return 1;
-}
-
-int resend_irq_on_evtchn(unsigned int irq)
-{
-	return retrigger_evtchn(evtchn_from_irq(irq));
-}
-
 static void enable_dynirq(struct irq_data *data)
 {
 	int evtchn = evtchn_from_irq(data->irq);
@@ -1398,7 +1378,18 @@ static void mask_ack_dynirq(struct irq_data *data)
 
 static int retrigger_dynirq(struct irq_data *data)
 {
-	return retrigger_evtchn(evtchn_from_irq(data->irq));
+	unsigned int evtchn = evtchn_from_irq(data->irq);
+	int masked;
+
+	if (!VALID_EVTCHN(evtchn))
+		return 0;
+
+	masked = test_and_set_mask(evtchn);
+	set_evtchn(evtchn);
+	if (!masked)
+		unmask_evtchn(evtchn);
+
+	return 1;
 }
 
 static void restore_pirqs(void)

include/xen/events.h

@@ -52,7 +52,6 @@ int evtchn_get(unsigned int evtchn);
 void evtchn_put(unsigned int evtchn);
 
 void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector);
-int resend_irq_on_evtchn(unsigned int irq);
 void rebind_evtchn_irq(int evtchn, int irq);
 
 static inline void notify_remote_via_evtchn(int port)