xen: clear IRQ_NOAUTOEN and IRQ_NOREQUEST

Reset the IRQ_NOAUTOEN and IRQ_NOREQUEST flags that are enabled by
default on ARM. If IRQ_NOAUTOEN is set, __setup_irq doesn't call
irq_startup, that is responsible for calling irq_unmask at startup time.
As a result event channels remain masked.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 36bf17dc7bfc..c60d1629c916 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -842,6 +842,7 @@ int bind_evtchn_to_irq(unsigned int evtchn)
                 struct irq_info *info = info_for_irq(irq);
                 WARN_ON(info == NULL || info->type != IRQT_EVTCHN);
         }
+        irq_clear_status_flags(irq, IRQ_NOREQUEST|IRQ_NOAUTOEN);
 
 out:
         mutex_unlock(&irq_mapping_update_lock);