--- zzzz-none-000/linux-3.10.107/drivers/char/agp/efficeon-agp.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/char/agp/efficeon-agp.c	2021-02-04 17:41:59.000000000 +0000
@@ -128,7 +128,6 @@
 
 static int efficeon_configure(void)
 {
-	u32 temp;
 	u16 temp2;
 	struct aper_size_info_lvl2 *current_size;
 
@@ -141,8 +140,8 @@
 			      current_size->size_value);
 
 	/* address to map to */
-	pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
-	agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
+	agp_bridge->gart_bus_addr = pci_bus_address(agp_bridge->dev,
+						    AGP_APERTURE_BAR);
 
 	/* agpctrl */
 	pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);