diff --git a/src/northbridge/amd/agesa/family10/northbridge.c b/src/northbridge/amd/agesa/family10/northbridge.c
index 8e47c1a5a3..cd36192cdb 100644
--- a/src/northbridge/amd/agesa/family10/northbridge.c
+++ b/src/northbridge/amd/agesa/family10/northbridge.c
@@ -945,7 +945,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources	  = amdfam10_domain_read_resources,
 	.set_resources	  = amdfam10_domain_set_resources,
 	.enable_resources = amdfam10_domain_enable_resources,
-	.init		  = NULL,
+	.init		  = DEVICE_NOOP,
 	.scan_bus	  = amdfam10_domain_scan_bus,
 	.ops_pci_bus	  = pci_bus_default_ops,
 };
diff --git a/src/northbridge/amd/agesa/family12/northbridge.c b/src/northbridge/amd/agesa/family12/northbridge.c
index a3b34932b0..9d078ed33d 100644
--- a/src/northbridge/amd/agesa/family12/northbridge.c
+++ b/src/northbridge/amd/agesa/family12/northbridge.c
@@ -932,7 +932,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources   = domain_read_resources,
 	.set_resources    = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init             = NULL,
+	.init             = DEVICE_NOOP,
 	.scan_bus         = pci_domain_scan_bus,
 };
 
@@ -940,7 +940,7 @@ static struct device_operations pci_domain_ops = {
 static struct device_operations cpu_bus_ops = {
 	.read_resources   = cpu_bus_read_resources,
 	.set_resources    = cpu_bus_set_resources,
-	.enable_resources = NULL,
+	.enable_resources = DEVICE_NOOP,
 	.init             = cpu_bus_init,
 	.scan_bus         = 0,
 };
diff --git a/src/northbridge/amd/agesa/family14/northbridge.c b/src/northbridge/amd/agesa/family14/northbridge.c
index ff669ef89d..4017944595 100644
--- a/src/northbridge/amd/agesa/family14/northbridge.c
+++ b/src/northbridge/amd/agesa/family14/northbridge.c
@@ -947,14 +947,14 @@ static struct device_operations pci_domain_ops = {
 	.read_resources = domain_read_resources,
 	.set_resources = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init = NULL,
+	.init = DEVICE_NOOP,
 	.scan_bus = pci_domain_scan_bus,
 };
 
 static struct device_operations cpu_bus_ops = {
 	.read_resources = DEVICE_NOOP,
 	.set_resources = DEVICE_NOOP,
-	.enable_resources = NULL,
+	.enable_resources = DEVICE_NOOP,
 	.init = cpu_bus_init,
 	.scan_bus = cpu_bus_scan,
 };
diff --git a/src/northbridge/amd/agesa/family15/northbridge.c b/src/northbridge/amd/agesa/family15/northbridge.c
index 89e1644732..593579ecd5 100644
--- a/src/northbridge/amd/agesa/family15/northbridge.c
+++ b/src/northbridge/amd/agesa/family15/northbridge.c
@@ -968,7 +968,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources	  = domain_read_resources,
 	.set_resources	  = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init		  = NULL,
+	.init		  = DEVICE_NOOP,
 	.scan_bus	  = f15_pci_domain_scan_bus,
 	.ops_pci_bus	  = pci_bus_default_ops,
 };
diff --git a/src/northbridge/amd/agesa/family15rl/northbridge.c b/src/northbridge/amd/agesa/family15rl/northbridge.c
index f83ff2dd3e..223a0a0af7 100644
--- a/src/northbridge/amd/agesa/family15rl/northbridge.c
+++ b/src/northbridge/amd/agesa/family15rl/northbridge.c
@@ -957,7 +957,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources	  = domain_read_resources,
 	.set_resources	  = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init		  = NULL,
+	.init		  = DEVICE_NOOP,
 	.scan_bus	  = pci_domain_scan_bus,
 	.ops_pci_bus	  = pci_bus_default_ops,
 };
diff --git a/src/northbridge/amd/agesa/family15tn/northbridge.c b/src/northbridge/amd/agesa/family15tn/northbridge.c
index d878b4fac0..a18da684c5 100644
--- a/src/northbridge/amd/agesa/family15tn/northbridge.c
+++ b/src/northbridge/amd/agesa/family15tn/northbridge.c
@@ -955,7 +955,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources	  = domain_read_resources,
 	.set_resources	  = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init		  = NULL,
+	.init		  = DEVICE_NOOP,
 	.scan_bus	  = pci_domain_scan_bus,
 	.ops_pci_bus	  = pci_bus_default_ops,
 };
diff --git a/src/northbridge/amd/agesa/family16kb/northbridge.c b/src/northbridge/amd/agesa/family16kb/northbridge.c
index badec55e51..d0638caaa9 100644
--- a/src/northbridge/amd/agesa/family16kb/northbridge.c
+++ b/src/northbridge/amd/agesa/family16kb/northbridge.c
@@ -973,7 +973,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources	  = domain_read_resources,
 	.set_resources	  = domain_set_resources,
 	.enable_resources = domain_enable_resources,
-	.init		  = NULL,
+	.init		  = DEVICE_NOOP,
 	.scan_bus	  = pci_domain_scan_bus,
 	.ops_pci_bus	  = pci_bus_default_ops,
 };