xen: save previous spinlock when blocking

[linux-2.6-omap-h63xx.git] / drivers / xen / events.c

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index a0837036d898bc62c588022e9a352cb6e599d7cb..b6c2b8f16beedaab321700c6c091250d42bff3bf 100644 (file)
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -164,6 +164,12 @@ static inline void set_evtchn(int port)
        sync_set_bit(port, &s->evtchn_pending[0]);
 }
 
+static inline int test_evtchn(int port)
+{
+       struct shared_info *s = HYPERVISOR_shared_info;
+       return sync_test_bit(port, &s->evtchn_pending[0]);
+}
+
 
 /**
  * notify_remote_via_irq - send event to remote end of event channel via irq
@@ -732,6 +738,25 @@ void xen_clear_irq_pending(int irq)
                clear_evtchn(evtchn);
 }
 
+void xen_set_irq_pending(int irq)
+{
+       int evtchn = evtchn_from_irq(irq);
+
+       if (VALID_EVTCHN(evtchn))
+               set_evtchn(evtchn);
+}
+
+bool xen_test_irq_pending(int irq)
+{
+       int evtchn = evtchn_from_irq(irq);
+       bool ret = false;
+
+       if (VALID_EVTCHN(evtchn))
+               ret = test_evtchn(evtchn);
+
+       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)