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-rw-r--r--drivers/xen/events/events_base.c2
-rw-r--r--drivers/xen/events/events_internal.h12
2 files changed, 13 insertions, 1 deletions
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 4f7d94abe82c..929eccb77270 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -117,7 +117,7 @@ static int xen_irq_info_common_setup(struct irq_info *info,
irq_clear_status_flags(irq, IRQ_NOREQUEST|IRQ_NOAUTOEN);
- return 0;
+ return xen_evtchn_port_setup(info);
}
static int xen_irq_info_evtchn_setup(unsigned irq,
diff --git a/drivers/xen/events/events_internal.h b/drivers/xen/events/events_internal.h
index ba8142f0c635..dc9650265e04 100644
--- a/drivers/xen/events/events_internal.h
+++ b/drivers/xen/events/events_internal.h
@@ -55,6 +55,7 @@ struct irq_info {
#define PIRQ_SHAREABLE (1 << 1)
struct evtchn_ops {
+ int (*setup)(struct irq_info *info);
void (*bind_to_cpu)(struct irq_info *info, unsigned cpu);
void (*clear_pending)(unsigned port);
@@ -75,6 +76,17 @@ struct irq_info *info_for_irq(unsigned irq);
unsigned cpu_from_irq(unsigned irq);
unsigned cpu_from_evtchn(unsigned int evtchn);
+/*
+ * Do any ABI specific setup for a bound event channel before it can
+ * be unmasked and used.
+ */
+static inline int xen_evtchn_port_setup(struct irq_info *info)
+{
+ if (evtchn_ops->setup)
+ return evtchn_ops->setup(info);
+ return 0;
+}
+
static inline void xen_evtchn_port_bind_to_cpu(struct irq_info *info,
unsigned cpu)
{