--- orig/arch/i386/kernel/pci-pc.c	2003-03-21 03:46:41.000000000 -0700
+++ linux-2.4.20/arch/i386/kernel/pci-pc.c	2003-03-21 03:46:41.000000000 -0700
@@ -1298,6 +1298,16 @@
 		mask = 0x3f; /* clear only bits 6 and 7; clearing bit 5
 				causes screen corruption on the KL133/KM133 */
 	}
+#if CONFIG_VIA_NORTHBRIDGE_FIXUP
+    mask = 0x3f;
+#else
+	if (d->device == PCI_DEVICE_ID_VIA_8363_0 &&
+		(revision == VIA_8363_KL133_REVISION_ID || 
+		revision == VIA_8363_KM133_REVISION_ID)) {
+			mask = 0x3f; /* clear only bits 6 and 7; clearing bit 5
+							causes screen corruption on the KL133/KM133 */	
+ 	}
+#endif
 
 	pci_read_config_byte(d, where, &v);
 	if (v & ~mask) {
--- orig/arch/i386/config.in	2003-03-21 03:46:41.000000000 -0700
+++ linux-2.4.20/arch/i386/config.in	2003-03-21 03:46:41.000000000 -0700
@@ -201,6 +201,8 @@
 tristate '/dev/cpu/*/msr - Model-specific register support' CONFIG_X86_MSR
 tristate '/dev/cpu/*/cpuid - CPU information support' CONFIG_X86_CPUID
 
+bool 'Enable VIA KL133/KM133 Northbridge PCI workaround' CONFIG_VIA_NORTHBRIDGE_FIXUP
+
 choice 'High Memory Support' \
 	"off    CONFIG_NOHIGHMEM \
 	 4GB    CONFIG_HIGHMEM4G \