--- linux/drivers/char/drm/r128_cce.c.foo	Fri Sep 28 14:26:06 2001
+++ linux/drivers/char/drm/r128_cce.c	Fri Sep 28 14:26:17 2001
@@ -681,7 +681,7 @@
 		/*
 		 * Free the page we grabbed for RPTR_ADDR
 		 */
-		if( dev->agp->agp_info.chipset == INTEL_460GX ) {
+		if( !dev_priv->is_pci && dev->agp->agp_info.chipset == INTEL_460GX ) {
 			unsigned long alt_rh_off =
 				(unsigned long) dev_priv->ring.head;
 
--- linux-2.4.9-0.15/drivers/char/drm/radeon_cp.c.foo	Fri Sep 28 14:46:11 2001
+++ linux-2.4.9-0.15/drivers/char/drm/radeon_cp.c	Fri Sep 28 14:47:23 2001
@@ -1026,7 +1026,7 @@
 		/*
 		 * Free the page we grabbed for RPTR_ADDR
 		 */
-		if( dev->agp->agp_info.chipset == INTEL_460GX ) {
+		if( !dev_priv->is_pci && dev->agp->agp_info.chipset == INTEL_460GX ) {
 			unsigned long alt_rh_off =
 				(unsigned long) dev_priv->ring.head;