--- qemu/roms/seabios/src/pciinit.c	2018/04/24 18:27:20	1.1.1.4
+++ qemu/roms/seabios/src/pciinit.c	2018/04/24 18:36:37	1.1.1.5
@@ -39,12 +39,10 @@ static u32 pci_bar(u16 bdf, int region_n
 
 static void pci_set_io_region_addr(u16 bdf, int region_num, u32 addr)
 {
-    u32 ofs, old_addr;
+    u32 ofs;
 
     ofs = pci_bar(bdf, region_num);
 
-    old_addr = pci_config_readl(bdf, ofs);
-
     pci_config_writel(bdf, ofs, addr);
     dprintf(1, "region %d: 0x%08x\n", region_num, addr);
 }
@@ -116,12 +114,8 @@ static int pci_bios_allocate_region(u16
 
     int is_64bit = !(val & PCI_BASE_ADDRESS_SPACE_IO) &&
         (val & PCI_BASE_ADDRESS_MEM_TYPE_MASK) == PCI_BASE_ADDRESS_MEM_TYPE_64;
-    if (is_64bit) {
-        if (size > 0) {
-            pci_config_writel(bdf, ofs + 4, 0);
-        } else {
-            pci_config_writel(bdf, ofs + 4, ~0);
-        }
+    if (is_64bit && size > 0) {
+        pci_config_writel(bdf, ofs + 4, 0);
     }
     return is_64bit;
 }