1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 7415aa927913..56ab74989cf1 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -64,6 +64,10 @@ static int xen_register_pirq(u32 gsi, int gsi_override, int triggering,
         int shareable = 0;
         char *name;
 
+        irq = xen_irq_from_gsi(gsi);
+        if (irq > 0)
+                return irq;
+
         if (set_pirq)
                 pirq = gsi;