2 files changed, 16 insertions, 5 deletions

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index bab5ac18fe0..4e0f868517b 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -1139,7 +1139,7 @@ void xen_clear_irq_pending(int irq)
         if (VALID_EVTCHN(evtchn))
                 clear_evtchn(evtchn);
 }
-
+EXPORT_SYMBOL(xen_clear_irq_pending);
 void xen_set_irq_pending(int irq)
 {
         int evtchn = evtchn_from_irq(irq);
@@ -1159,9 +1159,9 @@ bool xen_test_irq_pending(int irq)
         return ret;
 }
 
-/* Poll waiting for an irq to become pending.  In the usual case, the
-   irq will be disabled so it won't deliver an interrupt. */
-void xen_poll_irq(int irq)
+/* Poll waiting for an irq to become pending with timeout.  In the usual case,
+ * the irq will be disabled so it won't deliver an interrupt. */
+void xen_poll_irq_timeout(int irq, u64 timeout)
 {
         evtchn_port_t evtchn = evtchn_from_irq(irq);
 
@@ -1169,13 +1169,20 @@ void xen_poll_irq(int irq)
                 struct sched_poll poll;
 
                 poll.nr_ports = 1;
-                poll.timeout = 0;
+                poll.timeout = timeout;
                 set_xen_guest_handle(poll.ports, &evtchn);
 
                 if (HYPERVISOR_sched_op(SCHEDOP_poll, &poll) != 0)
                         BUG();
         }
 }
+EXPORT_SYMBOL(xen_poll_irq_timeout);
+/* Poll waiting for an irq to become pending.  In the usual case, the
+ * irq will be disabled so it won't deliver an interrupt. */
+void xen_poll_irq(int irq)
+{
+        xen_poll_irq_timeout(irq, 0 /* no timeout */);
+}
 
 void xen_irq_resume(void)
 {
diff --git a/include/xen/events.h b/include/xen/events.h
index 8227da8f716..2532f8bd240 100644
--- a/include/xen/events.h
+++ b/include/xen/events.h
@@ -53,6 +53,10 @@ bool xen_test_irq_pending(int irq);
    irq will be disabled so it won't deliver an interrupt. */
 void xen_poll_irq(int irq);
 
+/* Poll waiting for an irq to become pending with a timeout.  In the usual case,
+ * the irq will be disabled so it won't deliver an interrupt. */
+void xen_poll_irq_timeout(int irq, u64 timeout);
+
 /* Determine the IRQ which is bound to an event channel */
 unsigned irq_from_evtchn(unsigned int evtchn);