diff --git a/common/i945/hw-gfx-gma-power_and_clocks.adb b/common/i945/hw-gfx-gma-power_and_clocks.adb
index e18d1e3..23d5476 100644
--- a/common/i945/hw-gfx-gma-power_and_clocks.adb
+++ b/common/i945/hw-gfx-gma-power_and_clocks.adb
@@ -128,4 +128,9 @@
       CDClk_Switch := False;
    end Limit_Dotclocks;
 
+   procedure Power_Up (Port : Active_Port_Type; Success : out Boolean) is
+   begin
+      Success := True;
+   end Power_Up;
+
 end HW.GFX.GMA.Power_And_Clocks;