diff -aur xf86-video-sis-0.9.1.pristine/src/sis_driver.c xf86-video-sis-0.9.1.new/src/sis_driver.c
--- xf86-video-sis-0.9.1.pristine/src/sis_driver.c      2012-03-17 03:06:21.148507957 +1100
+++ xf86-video-sis-0.9.1.new/src/sis_driver.c   2012-03-17 03:18:57.373535928 +1100
@@ -3278,7 +3278,7 @@
     pSiS->pInt = NULL;
 
     /* Save PCI Domain Base */
-#if XF86_VERSION_CURRENT < XF86_VERSION_NUMERIC(4,2,99,0,0)
+#if XF86_VERSION_CURRENT < XF86_VERSION_NUMERIC(4,2,99,0,0) || GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) >= 12
     pSiS->IODBase = 0;
 #else
     pSiS->IODBase = pScrn->domainIOBase;