diff --git a/src/mainboard/agami/aruma/acpi_tables.c b/src/mainboard/agami/aruma/acpi_tables.c
index 823e5e200a..b10b73b3b6 100644
--- a/src/mainboard/agami/aruma/acpi_tables.c
+++ b/src/mainboard/agami/aruma/acpi_tables.c
@@ -65,6 +65,11 @@ extern unsigned sbdn;
 extern unsigned hcdn[];
 extern unsigned sbdnx[7];	// for all 8131
 
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+	/* Just a dummy */
+	return current;
+}
 
 unsigned long acpi_fill_madt(unsigned long current)
 {
diff --git a/src/mainboard/amd/serengeti_cheetah/acpi_tables.c b/src/mainboard/amd/serengeti_cheetah/acpi_tables.c
index 1ba92e2b64..ddc8c1826f 100644
--- a/src/mainboard/amd/serengeti_cheetah/acpi_tables.c
+++ b/src/mainboard/amd/serengeti_cheetah/acpi_tables.c
@@ -48,6 +48,12 @@ extern unsigned char AmlCode_ssdt4[];
 
 #define IO_APIC_ADDR	0xfec00000UL
 
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+	/* Just a dummy */
+	return current;
+}
+
 unsigned long acpi_fill_madt(unsigned long current)
 {
 	unsigned int gsi_base=0x18;
diff --git a/src/mainboard/intel/xe7501devkit/acpi_tables.c b/src/mainboard/intel/xe7501devkit/acpi_tables.c
index 7d1261c57f..84edb69d75 100644
--- a/src/mainboard/intel/xe7501devkit/acpi_tables.c
+++ b/src/mainboard/intel/xe7501devkit/acpi_tables.c
@@ -14,10 +14,16 @@
 #include "bus.h"
 #include "ioapic.h"
 
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+	/* Just a dummy */
+	return current;
+}
+
 unsigned long acpi_fill_srat(unsigned long current)
 {
 	// Not implemented
-	return 0;
+	return current;
 }
 
 unsigned long acpi_fill_madt(unsigned long current)
diff --git a/src/mainboard/iwill/dk8_htx/acpi_tables.c b/src/mainboard/iwill/dk8_htx/acpi_tables.c
index 28cf584323..1f891dae08 100644
--- a/src/mainboard/iwill/dk8_htx/acpi_tables.c
+++ b/src/mainboard/iwill/dk8_htx/acpi_tables.c
@@ -49,6 +49,13 @@ extern unsigned char AmlCode_ssdt5[];
 
 #define IO_APIC_ADDR	0xfec00000UL
 
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+	/* Just a dummy */
+	return current;
+}
+
+
 unsigned long acpi_fill_madt(unsigned long current)
 {
 	unsigned int gsi_base=0x18;
diff --git a/src/mainboard/via/epia-m/acpi_tables.c b/src/mainboard/via/epia-m/acpi_tables.c
index cf49338100..209434415b 100644
--- a/src/mainboard/via/epia-m/acpi_tables.c
+++ b/src/mainboard/via/epia-m/acpi_tables.c
@@ -13,14 +13,23 @@
 
 extern unsigned char AmlCode[];
 
+unsigned long acpi_fill_mcfg(unsigned long current)
+{
+	/* Nothing to do */
+	return current;
+}
+
+
 unsigned long acpi_fill_madt(unsigned long current)
 {
 	/* Nothing to do */
+	return current;
 }
 
 unsigned long acpi_fill_srat(unsigned long current)
 {
 	/* No NUMA, no SRAT */
+	return current;
 }
 
 unsigned long write_acpi_tables(unsigned long start)
diff --git a/src/northbridge/via/vt8623/northbridge.c b/src/northbridge/via/vt8623/northbridge.c
index 73b498aa3e..bd128b9cc9 100644
--- a/src/northbridge/via/vt8623/northbridge.c
+++ b/src/northbridge/via/vt8623/northbridge.c
@@ -20,6 +20,7 @@
  * slower than normal, ethernet drops packets).
  * Apparently these registers govern some sort of bus master behavior.
  */
+#if 0
 static void dump_dev(device_t dev)
 {
 	int i,j;
@@ -32,6 +33,8 @@ static void dump_dev(device_t dev)
 		printk_debug("\n");
 	}
 }
+#endif
+
 static void northbridge_init(device_t dev) 
 {
 	device_t fb_dev;