1 files changed, 8 insertions, 0 deletions

diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index 4d1a7e9314cf..c6c90f39f4d9 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -785,6 +785,14 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
         return 0;
 }
 
+int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi)
+{
+        if (isa_irq >= 16)
+                return -1;
+        *gsi = isa_irq;
+        return 0;
+}
+
 /*
  *  ACPI based hotplug CPU support
  */