xen/arm: /spin_lock_irq/spin_lock_irqsave in gic_set_guest_irq

gic_set_guest_irq can be called with irq disabled

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index 165287c80e06344e2c5661ae164397d5356920aa..7627ad8280eb33901fef01790ec646583d2d4afc 100644 (file)
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -477,8 +477,9 @@ void gic_set_guest_irq(struct vcpu *v, unsigned int virtual_irq,
 {
     int i;
     struct pending_irq *iter, *n;
+    unsigned long flags;
 
-    spin_lock_irq(&gic.lock);
+    spin_lock_irqsave(&gic.lock, flags);
 
     if ( v->is_running && list_empty(&v->arch.vgic.lr_pending) )
     {
@@ -505,7 +506,7 @@ void gic_set_guest_irq(struct vcpu *v, unsigned int virtual_irq,
     list_add_tail(&n->lr_queue, &v->arch.vgic.lr_pending);
 
 out:
-    spin_unlock_irq(&gic.lock);
+    spin_unlock_irqrestore(&gic.lock, flags);
     return;
 }