{northbridge, soc, southbridge}/intel: Make use of pci_dev_set_subsystem()

This patch removes local definitions of sub_system function and make use
of common function pci_dev_set_subsystem().

Change-Id: I91982597fdf586ab514bec3d8e4d09f2565fe56d
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31982
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: David Guckian
Reviewed-by: Furquan Shaikh <furquan@google.com>

69 files changed, 75 insertions, 839 deletions

diff --git a/src/device/pci_device.c b/src/device/pci_device.c
index 86c72b89ff..fbe9d9691b 100644
--- a/src/device/pci_device.c
+++ b/src/device/pci_device.c
@@ -734,8 +734,13 @@ void pci_bus_reset(struct bus *bus)
 void pci_dev_set_subsystem(struct device *dev, unsigned int vendor,
 			   unsigned int device)
 {
-	pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-			   ((device & 0xffff) << 16) | (vendor & 0xffff));
+	if (!vendor || !device) {
+		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
+			pci_read_config32(dev, PCI_VENDOR_ID));
+	} else {
+		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
+			((device & 0xffff) << 16) | (vendor & 0xffff));
+	}
 }
 
 static int should_run_oprom(struct device *dev)
diff --git a/src/northbridge/intel/e7505/northbridge.c b/src/northbridge/intel/e7505/northbridge.c
index e3d3faf4a1..7cb0b5bfb7 100644
--- a/src/northbridge/intel/e7505/northbridge.c
+++ b/src/northbridge/intel/e7505/northbridge.c
@@ -74,15 +74,8 @@ static void mch_domain_set_resources(struct device *dev)
 	assign_resources(dev->link_list);
 }
 
-static void intel_set_subsystem(struct device *dev, unsigned int vendor,
-				unsigned int device)
-{
-	pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-		((device & 0xffff) << 16) | (vendor & 0xffff));
-}
-
 static struct pci_operations intel_pci_ops = {
-	.set_subsystem = intel_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations pci_domain_ops = {
diff --git a/src/northbridge/intel/fsp_rangeley/northbridge.c b/src/northbridge/intel/fsp_rangeley/northbridge.c
index 7663b26513..edc623a33b 100644
--- a/src/northbridge/intel/fsp_rangeley/northbridge.c
+++ b/src/northbridge/intel/fsp_rangeley/northbridge.c
@@ -172,18 +172,6 @@ static void mc_set_resources(struct device *dev)
 	pci_dev_set_resources(dev);
 }
 
-static void intel_set_subsystem(struct device *dev, unsigned int vendor,
-				unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static void northbridge_init(struct device *dev)
 {
 }
@@ -193,7 +181,7 @@ static void northbridge_enable(struct device *dev)
 }
 
 static struct pci_operations intel_pci_ops = {
-	.set_subsystem    = intel_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations pci_domain_ops = {
diff --git a/src/northbridge/intel/gm45/gma.c b/src/northbridge/intel/gm45/gma.c
index 648aa48fef..6e54208563 100644
--- a/src/northbridge/intel/gm45/gma.c
+++ b/src/northbridge/intel/gm45/gma.c
@@ -221,19 +221,6 @@ static void gma_func0_init(struct device *dev)
 	intel_gma_restore_opregion();
 }
 
-static void gma_set_subsystem(struct device *dev, unsigned int vendor,
-			      unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   ((device & 0xffff) << 16) | (vendor &
-								0xffff));
-	}
-}
-
 const struct i915_gpu_controller_info *
 intel_gma_get_controller_info(void)
 {
@@ -287,7 +274,7 @@ static const char *gma_acpi_name(const struct device *dev)
 }
 
 static struct pci_operations gma_pci_ops = {
-	.set_subsystem = gma_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations gma_func0_ops = {
diff --git a/src/northbridge/intel/haswell/gma.c b/src/northbridge/intel/haswell/gma.c
index 0fd0228268..1b2430f849 100644
--- a/src/northbridge/intel/haswell/gma.c
+++ b/src/northbridge/intel/haswell/gma.c
@@ -499,18 +499,6 @@ static void gma_func0_init(struct device *dev)
 	intel_gma_restore_opregion();
 }
 
-static void gma_set_subsystem(struct device *dev, unsigned int vendor,
-			      unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 const struct i915_gpu_controller_info *
 intel_gma_get_controller_info(void)
 {
@@ -558,7 +546,7 @@ gma_write_acpi_tables(struct device *const dev, unsigned long current,
 }
 
 static struct pci_operations gma_pci_ops = {
-	.set_subsystem    = gma_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations gma_func0_ops = {
diff --git a/src/northbridge/intel/haswell/minihd.c b/src/northbridge/intel/haswell/minihd.c
index 9a1df0f63e..994296adb0 100644
--- a/src/northbridge/intel/haswell/minihd.c
+++ b/src/northbridge/intel/haswell/minihd.c
@@ -103,20 +103,8 @@ static void minihd_init(struct device *dev)
 	}
 }
 
-static void minihd_set_subsystem(struct device *dev, unsigned int vendor,
-				 unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations minihd_pci_ops = {
-	.set_subsystem    = minihd_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations minihd_ops = {
diff --git a/src/northbridge/intel/haswell/northbridge.c b/src/northbridge/intel/haswell/northbridge.c
index 2b7afa8172..2fd5959ee0 100644
--- a/src/northbridge/intel/haswell/northbridge.c
+++ b/src/northbridge/intel/haswell/northbridge.c
@@ -468,18 +468,6 @@ static void disable_devices(void)
 	pci_write_config32(host_dev, DEVEN, deven);
 }
 
-static void intel_set_subsystem(struct device *dev, unsigned int vendor,
-				unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static void northbridge_init(struct device *dev)
 {
 	u8 bios_reset_cpl, pair;
@@ -510,7 +498,7 @@ static void northbridge_init(struct device *dev)
 }
 
 static struct pci_operations intel_pci_ops = {
-	.set_subsystem    = intel_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations mc_ops = {
diff --git a/src/northbridge/intel/i945/gma.c b/src/northbridge/intel/i945/gma.c
index 633b09d31b..ee656de66a 100644
--- a/src/northbridge/intel/i945/gma.c
+++ b/src/northbridge/intel/i945/gma.c
@@ -756,18 +756,6 @@ static void gma_func1_init(struct device *dev)
 		pci_write_config8(dev, 0xf4, 0xff);
 }
 
-static void gma_set_subsystem(struct device *dev, unsigned int vendor,
-			unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 const struct i915_gpu_controller_info *
 intel_gma_get_controller_info(void)
 {
@@ -834,7 +822,7 @@ static const char *gma_acpi_name(const struct device *dev)
 }
 
 static struct pci_operations gma_pci_ops = {
-	.set_subsystem    = gma_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations gma_func0_ops = {
diff --git a/src/northbridge/intel/i945/northbridge.c b/src/northbridge/intel/i945/northbridge.c
index 82392f4e53..e9867d988e 100644
--- a/src/northbridge/intel/i945/northbridge.c
+++ b/src/northbridge/intel/i945/northbridge.c
@@ -191,19 +191,8 @@ static void mc_read_resources(struct device *dev)
 	}
 }
 
-static void intel_set_subsystem(struct device *dev, unsigned int vendor,
-				unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
 static struct pci_operations intel_pci_ops = {
-	.set_subsystem    = intel_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations mc_ops = {
diff --git a/src/northbridge/intel/nehalem/gma.c b/src/northbridge/intel/nehalem/gma.c
index 16f1c35935..8c0117f531 100644
--- a/src/northbridge/intel/nehalem/gma.c
+++ b/src/northbridge/intel/nehalem/gma.c
@@ -623,19 +623,6 @@ static void gma_func0_init(struct device *dev)
 	intel_gma_restore_opregion();
 }
 
-static void gma_set_subsystem(struct device *dev, unsigned int vendor,
-			      unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   ((device & 0xffff) << 16) | (vendor &
-								0xffff));
-	}
-}
-
 static void gma_read_resources(struct device *dev)
 {
 	pci_dev_read_resources(dev);
@@ -703,7 +690,7 @@ gma_write_acpi_tables(struct device *const dev,
 }
 
 static struct pci_operations gma_pci_ops = {
-	.set_subsystem = gma_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations gma_func0_ops = {
diff --git a/src/northbridge/intel/nehalem/northbridge.c b/src/northbridge/intel/nehalem/northbridge.c
index 575c6008fc..a9032bafea 100644
--- a/src/northbridge/intel/nehalem/northbridge.c
+++ b/src/northbridge/intel/nehalem/northbridge.c
@@ -189,19 +189,6 @@ static void mc_set_resources(struct device *dev)
 	pci_dev_set_resources(dev);
 }
 
-static void intel_set_subsystem(struct device *dev, unsigned int vendor,
-				unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   ((device & 0xffff) << 16) | (vendor &
-								0xffff));
-	}
-}
-
 static void northbridge_dmi_init(struct device *dev)
 {
 	u32 reg32;
@@ -303,7 +290,7 @@ static void northbridge_init(struct device *dev)
 }
 
 static struct pci_operations intel_pci_ops = {
-	.set_subsystem = intel_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations mc_ops = {
diff --git a/src/northbridge/intel/pineview/gma.c b/src/northbridge/intel/pineview/gma.c
index d6ece9dc03..019f7648f0 100644
--- a/src/northbridge/intel/pineview/gma.c
+++ b/src/northbridge/intel/pineview/gma.c
@@ -304,19 +304,6 @@ static void gma_func0_init(struct device *dev)
 	intel_gma_restore_opregion();
 }
 
-static void gma_set_subsystem(struct device *dev, unsigned int vendor,
-			      unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   ((device & 0xffff) << 16) | (vendor &
-								0xffff));
-	}
-}
-
 const struct i915_gpu_controller_info *intel_gma_get_controller_info(void)
 {
 	struct device *dev = pcidev_on_root(0x2, 0);
@@ -360,7 +347,7 @@ static const char *gma_acpi_name(const struct device *dev)
 }
 
 static struct pci_operations gma_pci_ops = {
-	.set_subsystem = gma_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations gma_func0_ops = {
diff --git a/src/northbridge/intel/sandybridge/gma.c b/src/northbridge/intel/sandybridge/gma.c
index 7f7ea0c10f..0d28d67602 100644
--- a/src/northbridge/intel/sandybridge/gma.c
+++ b/src/northbridge/intel/sandybridge/gma.c
@@ -653,18 +653,6 @@ static void gma_func0_init(struct device *dev)
 	intel_gma_restore_opregion();
 }
 
-static void gma_set_subsystem(struct device *dev, unsigned int vendor,
-			      unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 const struct i915_gpu_controller_info *
 intel_gma_get_controller_info(void)
 {
@@ -731,7 +719,7 @@ static void gma_func0_disable(struct device *dev)
 }
 
 static struct pci_operations gma_pci_ops = {
-	.set_subsystem    = gma_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations gma_func0_ops = {
diff --git a/src/northbridge/intel/sandybridge/northbridge.c b/src/northbridge/intel/sandybridge/northbridge.c
index 477c26ec4e..5aa06c8e4f 100644
--- a/src/northbridge/intel/sandybridge/northbridge.c
+++ b/src/northbridge/intel/sandybridge/northbridge.c
@@ -285,18 +285,6 @@ static void mc_read_resources(struct device *dev)
 	}
 }
 
-static void intel_set_subsystem(struct device *dev, unsigned int vendor,
-				unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static void northbridge_dmi_init(struct device *dev)
 {
 	u32 reg32;
@@ -484,7 +472,7 @@ void northbridge_write_smram(u8 smram)
 }
 
 static struct pci_operations intel_pci_ops = {
-	.set_subsystem    = intel_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations mc_ops = {
diff --git a/src/northbridge/intel/x4x/gma.c b/src/northbridge/intel/x4x/gma.c
index 2c045e6fd1..c36a10352e 100644
--- a/src/northbridge/intel/x4x/gma.c
+++ b/src/northbridge/intel/x4x/gma.c
@@ -95,19 +95,6 @@ static void gma_func0_disable(struct device *dev)
 	pci_write_config16(dev_host, D0F0_GGC, ggc);
 }
 
-static void gma_set_subsystem(struct device *dev, unsigned int vendor,
-			unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   ((device & 0xffff) << 16) | (vendor &
-								0xffff));
-	}
-}
-
 const struct i915_gpu_controller_info *
 intel_gma_get_controller_info(void)
 {
@@ -159,7 +146,7 @@ static const char *gma_acpi_name(const struct device *dev)
 }
 
 static struct pci_operations gma_pci_ops = {
-	.set_subsystem = gma_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations gma_func0_ops = {
diff --git a/src/soc/intel/baytrail/chip.c b/src/soc/intel/baytrail/chip.c
index 210263734a..acac67930e 100644
--- a/src/soc/intel/baytrail/chip.c
+++ b/src/soc/intel/baytrail/chip.c
@@ -72,18 +72,6 @@ struct chip_operations soc_intel_baytrail_ops = {
 	.init = soc_init,
 };
 
-static void pci_set_subsystem(struct device *dev, unsigned vendor,
-			      unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 struct pci_operations soc_pci_ops = {
-	.set_subsystem = &pci_set_subsystem,
+	.set_subsystem = &pci_dev_set_subsystem,
 };
diff --git a/src/soc/intel/braswell/chip.c b/src/soc/intel/braswell/chip.c
index e8fd9d17b7..7617d53644 100644
--- a/src/soc/intel/braswell/chip.c
+++ b/src/soc/intel/braswell/chip.c
@@ -380,22 +380,8 @@ struct chip_operations soc_intel_braswell_ops = {
 	.init = soc_init,
 };
 
-static void pci_set_subsystem(struct device *dev, unsigned int vendor,
-	unsigned int device)
-{
-	printk(BIOS_SPEW, "%s/%s (%s, 0x%04x, 0x%04x)\n",
-			__FILE__, __func__, dev_name(dev), vendor, device);
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 struct pci_operations soc_pci_ops = {
-	.set_subsystem = &pci_set_subsystem,
+	.set_subsystem = &pci_dev_set_subsystem,
 };
 
 /**
diff --git a/src/soc/intel/broadwell/chip.c b/src/soc/intel/broadwell/chip.c
index 6383e15e79..caff026f45 100644
--- a/src/soc/intel/broadwell/chip.c
+++ b/src/soc/intel/broadwell/chip.c
@@ -64,17 +64,6 @@ struct chip_operations soc_intel_broadwell_ops = {
 	.init       = &broadwell_init_pre_device,
 };
 
-static void pci_set_subsystem(struct device *dev, unsigned int vendor,
-	unsigned int device)
-{
-	if (!vendor || !device)
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   pci_read_config32(dev, PCI_VENDOR_ID));
-	else
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   (device << 16) | vendor);
-}
-
 struct pci_operations broadwell_pci_ops = {
-	.set_subsystem = &pci_set_subsystem
+	.set_subsystem = &pci_dev_set_subsystem
 };
diff --git a/src/soc/intel/broadwell/ehci.c b/src/soc/intel/broadwell/ehci.c
index 53af617a3c..f29c4269b1 100644
--- a/src/soc/intel/broadwell/ehci.c
+++ b/src/soc/intel/broadwell/ehci.c
@@ -33,13 +33,7 @@ static void usb_ehci_set_subsystem(struct device *dev, unsigned int vendor,
 	/* Enable writes to protected registers. */
 	pci_write_config8(dev, 0x80, access_cntl | 1);
 
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
+	pci_dev_set_subsystem(dev, vendor, device);
 
 	/* Restore protection. */
 	pci_write_config8(dev, 0x80, access_cntl);
diff --git a/src/soc/intel/denverton_ns/chip.c b/src/soc/intel/denverton_ns/chip.c
index 68bd60c83a..b72bf28a76 100644
--- a/src/soc/intel/denverton_ns/chip.c
+++ b/src/soc/intel/denverton_ns/chip.c
@@ -129,21 +129,8 @@ struct chip_operations soc_intel_denverton_ns_ops = {
 	.final = soc_final
 };
 
-static void soc_set_subsystem(struct device *dev, uint32_t vendor,
-			      uint32_t device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   ((device & 0xffff) << 16) |
-					   (vendor & 0xffff));
-	}
-}
-
 struct pci_operations soc_pci_ops = {
-	.set_subsystem = soc_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 /*
diff --git a/src/soc/intel/fsp_baytrail/chip.c b/src/soc/intel/fsp_baytrail/chip.c
index c74c847512..9e8627993c 100644
--- a/src/soc/intel/fsp_baytrail/chip.c
+++ b/src/soc/intel/fsp_baytrail/chip.c
@@ -74,17 +74,6 @@ struct chip_operations soc_intel_fsp_baytrail_ops = {
 	.init = soc_init,
 };
 
-static void pci_set_subsystem(struct device *dev, unsigned vendor, unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 struct pci_operations soc_pci_ops = {
-	.set_subsystem = &pci_set_subsystem,
+	.set_subsystem = &pci_dev_set_subsystem,
 };
diff --git a/src/soc/intel/fsp_broadwell_de/chip.c b/src/soc/intel/fsp_broadwell_de/chip.c
index 6b1484577d..ba825f4aae 100644
--- a/src/soc/intel/fsp_broadwell_de/chip.c
+++ b/src/soc/intel/fsp_broadwell_de/chip.c
@@ -88,18 +88,6 @@ struct chip_operations soc_intel_fsp_broadwell_de_ops = {
 	.init = soc_init,
 };
 
-static void pci_set_subsystem(struct device *dev, unsigned vendor,
-			      unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 struct pci_operations soc_pci_ops = {
-	.set_subsystem = &pci_set_subsystem,
+	.set_subsystem = &pci_dev_set_subsystem,
 };
diff --git a/src/southbridge/intel/bd82x6x/azalia.c b/src/southbridge/intel/bd82x6x/azalia.c
index 0cc9efa133..8d424b8ba6 100644
--- a/src/southbridge/intel/bd82x6x/azalia.c
+++ b/src/southbridge/intel/bd82x6x/azalia.c
@@ -336,20 +336,8 @@ static const char *azalia_acpi_name(const struct device *dev)
 	return "HDEF";
 }
 
-static void azalia_set_subsystem(struct device *dev, unsigned vendor,
-				 unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations azalia_pci_ops = {
-	.set_subsystem    = azalia_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations azalia_ops = {
diff --git a/src/southbridge/intel/bd82x6x/lpc.c b/src/southbridge/intel/bd82x6x/lpc.c
index f22be9ed12..eda16da6f7 100644
--- a/src/southbridge/intel/bd82x6x/lpc.c
+++ b/src/southbridge/intel/bd82x6x/lpc.c
@@ -694,17 +694,6 @@ static void pch_lpc_enable(struct device *dev)
 	pch_enable(dev);
 }
 
-static void set_subsystem(struct device *dev, unsigned vendor, unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static void southbridge_inject_dsdt(struct device *dev)
 {
 	global_nvs_t *gnvs = cbmem_add (CBMEM_ID_ACPI_GNVS, sizeof(*gnvs));
@@ -924,7 +913,7 @@ static void lpc_final(struct device *dev)
 }
 
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/bd82x6x/me.c b/src/southbridge/intel/bd82x6x/me.c
index 5731b9bcd0..1670091055 100644
--- a/src/southbridge/intel/bd82x6x/me.c
+++ b/src/southbridge/intel/bd82x6x/me.c
@@ -735,19 +735,8 @@ static void intel_me_init(struct device *dev)
 	}
 }
 
-static void set_subsystem(struct device *dev, unsigned vendor, unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-			   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-			   ((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/bd82x6x/me_8.x.c b/src/southbridge/intel/bd82x6x/me_8.x.c
index a6ffe896c4..954353698d 100644
--- a/src/southbridge/intel/bd82x6x/me_8.x.c
+++ b/src/southbridge/intel/bd82x6x/me_8.x.c
@@ -738,19 +738,8 @@ static void intel_me_init(struct device *dev)
 	}
 }
 
-static void set_subsystem(struct device *dev, unsigned vendor, unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-			   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-			   ((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/bd82x6x/sata.c b/src/southbridge/intel/bd82x6x/sata.c
index 3ee0a5983b..91c87bf26e 100644
--- a/src/southbridge/intel/bd82x6x/sata.c
+++ b/src/southbridge/intel/bd82x6x/sata.c
@@ -234,18 +234,6 @@ static void sata_enable(struct device *dev)
 	pci_write_config16(dev, 0x90, map);
 }
 
-static void sata_set_subsystem(struct device *dev, unsigned vendor,
-			       unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static const char *sata_acpi_name(const struct device *dev)
 {
 	return "SATA";
@@ -258,7 +246,7 @@ static void sata_fill_ssdt(struct device *dev)
 }
 
 static struct pci_operations sata_pci_ops = {
-	.set_subsystem    = sata_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations sata_ops = {
diff --git a/src/southbridge/intel/bd82x6x/smbus.c b/src/southbridge/intel/bd82x6x/smbus.c
index 908380626c..4fb7539889 100644
--- a/src/southbridge/intel/bd82x6x/smbus.c
+++ b/src/southbridge/intel/bd82x6x/smbus.c
@@ -71,20 +71,8 @@ static struct smbus_bus_operations lops_smbus_bus = {
 	.write_byte	= lsmbus_write_byte,
 };
 
-static void smbus_set_subsystem(struct device *dev, unsigned vendor,
-				unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations smbus_pci_ops = {
-	.set_subsystem    = smbus_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static void smbus_read_resources(struct device *dev)
diff --git a/src/southbridge/intel/bd82x6x/usb_ehci.c b/src/southbridge/intel/bd82x6x/usb_ehci.c
index 6cf4c1061b..8fe3e41d6d 100644
--- a/src/southbridge/intel/bd82x6x/usb_ehci.c
+++ b/src/southbridge/intel/bd82x6x/usb_ehci.c
@@ -84,13 +84,7 @@ static void usb_ehci_set_subsystem(struct device *dev, unsigned vendor,
 	/* Enable writes to protected registers. */
 	pci_write_config8(dev, 0x80, access_cntl | 1);
 
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
+	pci_dev_set_subsystem(dev, vendor, device);
 
 	/* Restore protection. */
 	pci_write_config8(dev, 0x80, access_cntl);
diff --git a/src/southbridge/intel/bd82x6x/usb_xhci.c b/src/southbridge/intel/bd82x6x/usb_xhci.c
index 07d74e0248..85e450db5b 100644
--- a/src/southbridge/intel/bd82x6x/usb_xhci.c
+++ b/src/southbridge/intel/bd82x6x/usb_xhci.c
@@ -56,20 +56,8 @@ static const char *xhci_acpi_name(const struct device *dev)
 	return "XHC";
 }
 
-static void xhci_set_subsystem(struct device *dev, unsigned vendor,
-			       unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations xhci_pci_ops = {
-	.set_subsystem		= xhci_set_subsystem,
+	.set_subsystem		= pci_dev_set_subsystem,
 };
 
 static struct device_operations usb_xhci_ops = {
diff --git a/src/southbridge/intel/fsp_rangeley/lpc.c b/src/southbridge/intel/fsp_rangeley/lpc.c
index 711778e125..4118e5fded 100644
--- a/src/southbridge/intel/fsp_rangeley/lpc.c
+++ b/src/southbridge/intel/fsp_rangeley/lpc.c
@@ -417,17 +417,6 @@ static void soc_lpc_enable(struct device *dev)
 	soc_enable(dev);
 }
 
-static void set_subsystem(struct device *dev, unsigned vendor, unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static void southbridge_inject_dsdt(struct device *dev)
 {
 	global_nvs_t *gnvs = cbmem_add (CBMEM_ID_ACPI_GNVS, sizeof(*gnvs));
@@ -448,7 +437,7 @@ static void southbridge_inject_dsdt(struct device *dev)
 }
 
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/fsp_rangeley/sata.c b/src/southbridge/intel/fsp_rangeley/sata.c
index 3f72a3dfe9..58388a2fab 100644
--- a/src/southbridge/intel/fsp_rangeley/sata.c
+++ b/src/southbridge/intel/fsp_rangeley/sata.c
@@ -96,19 +96,8 @@ static void sata_enable(struct device *dev)
 {
 }
 
-static void sata_set_subsystem(struct device *dev, unsigned vendor, unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations sata_pci_ops = {
-	.set_subsystem    = sata_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations sata_ops = {
diff --git a/src/southbridge/intel/fsp_rangeley/smbus.c b/src/southbridge/intel/fsp_rangeley/smbus.c
index 90b0420465..83533f1d03 100644
--- a/src/southbridge/intel/fsp_rangeley/smbus.c
+++ b/src/southbridge/intel/fsp_rangeley/smbus.c
@@ -40,20 +40,8 @@ static struct smbus_bus_operations lops_smbus_bus = {
 	.read_byte	= lsmbus_read_byte,
 };
 
-static void smbus_set_subsystem(struct device *dev, unsigned vendor,
-				unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations smbus_pci_ops = {
-	.set_subsystem    = smbus_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static void rangeley_smbus_read_resources(struct device *dev)
diff --git a/src/southbridge/intel/i82801gx/ac97.c b/src/southbridge/intel/i82801gx/ac97.c
index 582c962197..f18aedbca7 100644
--- a/src/southbridge/intel/i82801gx/ac97.c
+++ b/src/southbridge/intel/i82801gx/ac97.c
@@ -247,20 +247,8 @@ static void ac97_modem_init(struct device *dev)
 	}
 }
 
-static void ac97_set_subsystem(struct device *dev, unsigned int vendor,
-			       unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations ac97_pci_ops = {
-	.set_subsystem    = ac97_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations ac97_audio_ops = {
diff --git a/src/southbridge/intel/i82801gx/azalia.c b/src/southbridge/intel/i82801gx/azalia.c
index 7bf48ef7b0..938dc4edd6 100644
--- a/src/southbridge/intel/i82801gx/azalia.c
+++ b/src/southbridge/intel/i82801gx/azalia.c
@@ -303,20 +303,8 @@ static void azalia_init(struct device *dev)
 	}
 }
 
-static void azalia_set_subsystem(struct device *dev, unsigned int vendor,
-				 unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations azalia_pci_ops = {
-	.set_subsystem    = azalia_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations azalia_ops = {
diff --git a/src/southbridge/intel/i82801gx/ide.c b/src/southbridge/intel/i82801gx/ide.c
index e25eaae150..a36237228c 100644
--- a/src/southbridge/intel/i82801gx/ide.c
+++ b/src/southbridge/intel/i82801gx/ide.c
@@ -92,20 +92,8 @@ static void ide_init(struct device *dev)
 	printk(BIOS_DEBUG, "\n");
 }
 
-static void ide_set_subsystem(struct device *dev, unsigned int vendor,
-			      unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations ide_pci_ops = {
-	.set_subsystem    = ide_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations ide_ops = {
diff --git a/src/southbridge/intel/i82801gx/lpc.c b/src/southbridge/intel/i82801gx/lpc.c
index 669648ba55..a1cc45af65 100644
--- a/src/southbridge/intel/i82801gx/lpc.c
+++ b/src/southbridge/intel/i82801gx/lpc.c
@@ -676,18 +676,6 @@ static void lpc_final(struct device *dev)
 	outb(POST_OS_BOOT, 0x80);
 }
 
-static void set_subsystem(struct device *dev, unsigned int vendor,
-			  unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static void southbridge_inject_dsdt(struct device *dev)
 {
 	global_nvs_t *gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, sizeof(*gnvs));
@@ -728,7 +716,7 @@ static void southbridge_fill_ssdt(struct device *device)
 }
 
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/i82801gx/sata.c b/src/southbridge/intel/i82801gx/sata.c
index bf473f6d95..8514b6d3bf 100644
--- a/src/southbridge/intel/i82801gx/sata.c
+++ b/src/southbridge/intel/i82801gx/sata.c
@@ -200,20 +200,8 @@ static void sata_init(struct device *dev)
 	pci_write_config32(dev, SATA_IR, reg32);
 }
 
-static void sata_set_subsystem(struct device *dev, unsigned int vendor,
-			       unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations sata_pci_ops = {
-	.set_subsystem    = sata_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations sata_ops = {
diff --git a/src/southbridge/intel/i82801gx/smbus.c b/src/southbridge/intel/i82801gx/smbus.c
index 7e95beb9bd..693c2dc96d 100644
--- a/src/southbridge/intel/i82801gx/smbus.c
+++ b/src/southbridge/intel/i82801gx/smbus.c
@@ -81,20 +81,8 @@ static struct smbus_bus_operations lops_smbus_bus = {
 	.block_write    = lsmbus_block_write,
 };
 
-static void smbus_set_subsystem(struct device *dev, unsigned int vendor,
-				unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations smbus_pci_ops = {
-	.set_subsystem    = smbus_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static void smbus_read_resources(struct device *dev)
diff --git a/src/southbridge/intel/i82801gx/usb.c b/src/southbridge/intel/i82801gx/usb.c
index 307b5ac622..cd43e03750 100644
--- a/src/southbridge/intel/i82801gx/usb.c
+++ b/src/southbridge/intel/i82801gx/usb.c
@@ -43,20 +43,8 @@ static void usb_init(struct device *dev)
 	printk(BIOS_DEBUG, "done.\n");
 }
 
-static void usb_set_subsystem(struct device *dev, unsigned int vendor,
-			      unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations usb_pci_ops = {
-	.set_subsystem    = usb_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations usb_ops = {
diff --git a/src/southbridge/intel/i82801gx/usb_ehci.c b/src/southbridge/intel/i82801gx/usb_ehci.c
index cbefe20540..0a94d3b5f2 100644
--- a/src/southbridge/intel/i82801gx/usb_ehci.c
+++ b/src/southbridge/intel/i82801gx/usb_ehci.c
@@ -69,13 +69,7 @@ static void usb_ehci_set_subsystem(struct device *dev, unsigned int vendor,
 	/* Enable writes to protected registers. */
 	pci_write_config8(dev, 0x80, access_cntl | 1);
 
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
+	pci_dev_set_subsystem(dev, vendor, device);
 
 	/* Restore protection. */
 	pci_write_config8(dev, 0x80, access_cntl);
diff --git a/src/southbridge/intel/i82801ix/hdaudio.c b/src/southbridge/intel/i82801ix/hdaudio.c
index e47f6e0fcb..16350d534e 100644
--- a/src/southbridge/intel/i82801ix/hdaudio.c
+++ b/src/southbridge/intel/i82801ix/hdaudio.c
@@ -287,20 +287,8 @@ static void azalia_init(struct device *dev)
 	}
 }
 
-static void azalia_set_subsystem(struct device *dev, unsigned vendor,
-				 unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations azalia_pci_ops = {
-	.set_subsystem    = azalia_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations azalia_ops = {
diff --git a/src/southbridge/intel/i82801ix/lpc.c b/src/southbridge/intel/i82801ix/lpc.c
index 79a1a1d03f..ce47c590bc 100644
--- a/src/southbridge/intel/i82801ix/lpc.c
+++ b/src/southbridge/intel/i82801ix/lpc.c
@@ -527,17 +527,6 @@ static void i82801ix_lpc_read_resources(struct device *dev)
 	res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
 }
 
-static void set_subsystem(struct device *dev, unsigned vendor, unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static void southbridge_inject_dsdt(struct device *dev)
 {
 	global_nvs_t *gnvs = cbmem_add (CBMEM_ID_ACPI_GNVS, sizeof(*gnvs));
@@ -578,7 +567,7 @@ static void southbridge_fill_ssdt(struct device *device)
 }
 
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/i82801ix/sata.c b/src/southbridge/intel/i82801ix/sata.c
index 0e7f35bce8..6155c15006 100644
--- a/src/southbridge/intel/i82801ix/sata.c
+++ b/src/southbridge/intel/i82801ix/sata.c
@@ -258,20 +258,8 @@ static void sata_enable(struct device *dev)
 	pci_write_config16(dev, 0x90, map);
 }
 
-static void sata_set_subsystem(struct device *dev, unsigned vendor,
-			       unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations sata_pci_ops = {
-	.set_subsystem    = sata_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations sata_ops = {
diff --git a/src/southbridge/intel/i82801ix/smbus.c b/src/southbridge/intel/i82801ix/smbus.c
index c3d23eaccf..9bab9b25de 100644
--- a/src/southbridge/intel/i82801ix/smbus.c
+++ b/src/southbridge/intel/i82801ix/smbus.c
@@ -64,20 +64,8 @@ static struct smbus_bus_operations lops_smbus_bus = {
 	.write_byte	= lsmbus_write_byte,
 };
 
-static void smbus_set_subsystem(struct device *dev, unsigned vendor,
-				unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations smbus_pci_ops = {
-	.set_subsystem    = smbus_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static void smbus_read_resources(struct device *dev)
diff --git a/src/southbridge/intel/i82801ix/thermal.c b/src/southbridge/intel/i82801ix/thermal.c
index 7316f951c2..2deb84d4b2 100644
--- a/src/southbridge/intel/i82801ix/thermal.c
+++ b/src/southbridge/intel/i82801ix/thermal.c
@@ -51,20 +51,8 @@ static void thermal_init(struct device *dev)
 	pci_write_config32(dev, 0x10, 0);
 }
 
-static void thermal_set_subsystem(struct device *dev, unsigned vendor,
-				  unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations thermal_pci_ops = {
-	.set_subsystem = thermal_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/i82801ix/usb_ehci.c b/src/southbridge/intel/i82801ix/usb_ehci.c
index 8768e3e0cf..f7d8b87828 100644
--- a/src/southbridge/intel/i82801ix/usb_ehci.c
+++ b/src/southbridge/intel/i82801ix/usb_ehci.c
@@ -44,13 +44,7 @@ static void usb_ehci_set_subsystem(struct device *dev, unsigned vendor,
 	/* Enable writes to protected registers. */
 	pci_write_config8(dev, 0x80, access_cntl | 1);
 
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
+	pci_dev_set_subsystem(dev, vendor, device);
 
 	/* Restore protection. */
 	pci_write_config8(dev, 0x80, access_cntl);
diff --git a/src/southbridge/intel/i82801jx/hdaudio.c b/src/southbridge/intel/i82801jx/hdaudio.c
index 1e852c0cd2..c2a505b613 100644
--- a/src/southbridge/intel/i82801jx/hdaudio.c
+++ b/src/southbridge/intel/i82801jx/hdaudio.c
@@ -287,20 +287,8 @@ static void azalia_init(struct device *dev)
 	}
 }
 
-static void azalia_set_subsystem(struct device *dev, unsigned vendor,
-				 unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations azalia_pci_ops = {
-	.set_subsystem    = azalia_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations azalia_ops = {
diff --git a/src/southbridge/intel/i82801jx/lpc.c b/src/southbridge/intel/i82801jx/lpc.c
index a365825e7b..abfe665989 100644
--- a/src/southbridge/intel/i82801jx/lpc.c
+++ b/src/southbridge/intel/i82801jx/lpc.c
@@ -684,17 +684,6 @@ static void i82801jx_lpc_read_resources(struct device *dev)
 	}
 }
 
-static void set_subsystem(struct device *dev, unsigned vendor, unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static void southbridge_inject_dsdt(struct device *dev)
 {
 	global_nvs_t *gnvs = cbmem_add (CBMEM_ID_ACPI_GNVS, sizeof(*gnvs));
@@ -734,7 +723,7 @@ static void southbridge_fill_ssdt(struct device *device)
 }
 
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/i82801jx/sata.c b/src/southbridge/intel/i82801jx/sata.c
index bd035de742..8de2d7427d 100644
--- a/src/southbridge/intel/i82801jx/sata.c
+++ b/src/southbridge/intel/i82801jx/sata.c
@@ -253,20 +253,8 @@ static void sata_enable(struct device *dev)
 	pci_write_config16(dev, 0x90, map);
 }
 
-static void sata_set_subsystem(struct device *dev, unsigned vendor,
-			       unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations sata_pci_ops = {
-	.set_subsystem    = sata_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations sata_ops = {
diff --git a/src/southbridge/intel/i82801jx/smbus.c b/src/southbridge/intel/i82801jx/smbus.c
index f9e223f591..d366703a66 100644
--- a/src/southbridge/intel/i82801jx/smbus.c
+++ b/src/southbridge/intel/i82801jx/smbus.c
@@ -91,20 +91,8 @@ static struct smbus_bus_operations lops_smbus_bus = {
 	.block_write    = lsmbus_block_write,
 };
 
-static void smbus_set_subsystem(struct device *dev, unsigned vendor,
-				unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations smbus_pci_ops = {
-	.set_subsystem    = smbus_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static void smbus_read_resources(struct device *dev)
diff --git a/src/southbridge/intel/i82801jx/thermal.c b/src/southbridge/intel/i82801jx/thermal.c
index ac4c596f28..65d897f288 100644
--- a/src/southbridge/intel/i82801jx/thermal.c
+++ b/src/southbridge/intel/i82801jx/thermal.c
@@ -51,20 +51,8 @@ static void thermal_init(struct device *dev)
 	pci_write_config32(dev, 0x10, 0);
 }
 
-static void thermal_set_subsystem(struct device *dev, unsigned vendor,
-				  unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations thermal_pci_ops = {
-	.set_subsystem = thermal_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/i82801jx/usb_ehci.c b/src/southbridge/intel/i82801jx/usb_ehci.c
index 543ac57f01..a4f5a01dc1 100644
--- a/src/southbridge/intel/i82801jx/usb_ehci.c
+++ b/src/southbridge/intel/i82801jx/usb_ehci.c
@@ -44,13 +44,7 @@ static void usb_ehci_set_subsystem(struct device *dev, unsigned vendor,
 	/* Enable writes to protected registers. */
 	pci_write_config8(dev, 0x80, access_cntl | 1);
 
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
+	pci_dev_set_subsystem(dev, vendor, device);
 
 	/* Restore protection. */
 	pci_write_config8(dev, 0x80, access_cntl);
diff --git a/src/southbridge/intel/ibexpeak/azalia.c b/src/southbridge/intel/ibexpeak/azalia.c
index 3cec2a9d9f..5b38ea760a 100644
--- a/src/southbridge/intel/ibexpeak/azalia.c
+++ b/src/southbridge/intel/ibexpeak/azalia.c
@@ -313,20 +313,8 @@ static void azalia_init(struct device *dev)
 	pci_write_config8(dev, 0x43, reg8);
 }
 
-static void azalia_set_subsystem(struct device *dev, unsigned vendor,
-				 unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations azalia_pci_ops = {
-	.set_subsystem    = azalia_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations azalia_ops = {
diff --git a/src/southbridge/intel/ibexpeak/lpc.c b/src/southbridge/intel/ibexpeak/lpc.c
index d440f65eee..fe1d84a2b7 100644
--- a/src/southbridge/intel/ibexpeak/lpc.c
+++ b/src/southbridge/intel/ibexpeak/lpc.c
@@ -609,18 +609,6 @@ static void pch_lpc_enable(struct device *dev)
 	pch_enable(dev);
 }
 
-static void set_subsystem(struct device *dev, unsigned vendor,
-			  unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static void southbridge_inject_dsdt(struct device *dev)
 {
 	global_nvs_t *gnvs = cbmem_add (CBMEM_ID_ACPI_GNVS, sizeof(*gnvs));
@@ -807,7 +795,7 @@ static void lpc_final(struct device *dev)
 }
 
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/ibexpeak/me.c b/src/southbridge/intel/ibexpeak/me.c
index df224d364e..8d3ae02179 100644
--- a/src/southbridge/intel/ibexpeak/me.c
+++ b/src/southbridge/intel/ibexpeak/me.c
@@ -610,20 +610,8 @@ static void intel_me_init(struct device *dev)
 	}
 }
 
-static void set_subsystem(struct device *dev, unsigned vendor,
-			  unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-			   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-			   ((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/ibexpeak/sata.c b/src/southbridge/intel/ibexpeak/sata.c
index 2c24bbf64f..112445bb65 100644
--- a/src/southbridge/intel/ibexpeak/sata.c
+++ b/src/southbridge/intel/ibexpeak/sata.c
@@ -235,19 +235,6 @@ static void sata_enable(struct device *dev)
 	pci_write_config16(dev, 0x90, map);
 }
 
-static void sata_set_subsystem(struct device *dev, unsigned vendor,
-			       unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   ((device & 0xffff) << 16) | (vendor &
-								0xffff));
-	}
-}
-
 static void sata_fill_ssdt(struct device *dev)
 {
 	config_t *config = dev->chip_info;
@@ -255,7 +242,7 @@ static void sata_fill_ssdt(struct device *dev)
 }
 
 static struct pci_operations sata_pci_ops = {
-	.set_subsystem = sata_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations sata_ops = {
diff --git a/src/southbridge/intel/ibexpeak/smbus.c b/src/southbridge/intel/ibexpeak/smbus.c
index 53ba9e2ce3..dd3abfe60c 100644
--- a/src/southbridge/intel/ibexpeak/smbus.c
+++ b/src/southbridge/intel/ibexpeak/smbus.c
@@ -71,20 +71,8 @@ static struct smbus_bus_operations lops_smbus_bus = {
 	.write_byte	= lsmbus_write_byte,
 };
 
-static void smbus_set_subsystem(struct device *dev, unsigned vendor,
-				unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations smbus_pci_ops = {
-	.set_subsystem    = smbus_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static void smbus_read_resources(struct device *dev)
diff --git a/src/southbridge/intel/ibexpeak/thermal.c b/src/southbridge/intel/ibexpeak/thermal.c
index ca8492b7b3..31b2cb6084 100644
--- a/src/southbridge/intel/ibexpeak/thermal.c
+++ b/src/southbridge/intel/ibexpeak/thermal.c
@@ -45,21 +45,8 @@ static void thermal_init(struct device *dev)
 	printk(BIOS_DEBUG, "Thermal init done.\n");
 }
 
-static void set_subsystem(struct device *dev, unsigned vendor,
-			  unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   ((device & 0xffff) << 16) | (vendor &
-								0xffff));
-	}
-}
-
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations thermal_ops = {
diff --git a/src/southbridge/intel/ibexpeak/usb_ehci.c b/src/southbridge/intel/ibexpeak/usb_ehci.c
index 4eacd1b9aa..95cac8123c 100644
--- a/src/southbridge/intel/ibexpeak/usb_ehci.c
+++ b/src/southbridge/intel/ibexpeak/usb_ehci.c
@@ -78,14 +78,7 @@ static void usb_ehci_set_subsystem(struct device *dev, unsigned vendor,
 	/* Enable writes to protected registers. */
 	pci_write_config8(dev, 0x80, access_cntl | 1);
 
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				   ((device & 0xffff) << 16) | (vendor &
-								0xffff));
-	}
+	pci_dev_set_subsystem(dev, vendor, device);
 
 	/* Restore protection. */
 	pci_write_config8(dev, 0x80, access_cntl);
diff --git a/src/southbridge/intel/lynxpoint/azalia.c b/src/southbridge/intel/lynxpoint/azalia.c
index 5dd46b2ef5..2deb92976e 100644
--- a/src/southbridge/intel/lynxpoint/azalia.c
+++ b/src/southbridge/intel/lynxpoint/azalia.c
@@ -154,20 +154,8 @@ static void azalia_init(struct device *dev)
 	}
 }
 
-static void azalia_set_subsystem(struct device *dev, unsigned int vendor,
-				 unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations azalia_pci_ops = {
-	.set_subsystem    = azalia_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations azalia_ops = {
diff --git a/src/southbridge/intel/lynxpoint/lpc.c b/src/southbridge/intel/lynxpoint/lpc.c
index 94b3111d1e..e8cad388d5 100644
--- a/src/southbridge/intel/lynxpoint/lpc.c
+++ b/src/southbridge/intel/lynxpoint/lpc.c
@@ -723,17 +723,6 @@ static void pch_lpc_enable(struct device *dev)
 	pch_enable(dev);
 }
 
-static void set_subsystem(struct device *dev, unsigned vendor, unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static void southbridge_inject_dsdt(struct device *dev)
 {
 	global_nvs_t *gnvs;
@@ -981,7 +970,7 @@ static void lpc_final(struct device *dev)
 }
 
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/lynxpoint/me_9.x.c b/src/southbridge/intel/lynxpoint/me_9.x.c
index f5f94fe625..09eeff26c3 100644
--- a/src/southbridge/intel/lynxpoint/me_9.x.c
+++ b/src/southbridge/intel/lynxpoint/me_9.x.c
@@ -874,20 +874,8 @@ static void intel_me_init(struct device *dev)
 	 */
 }
 
-static void set_subsystem(struct device *dev, unsigned int vendor,
-			  unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-			   pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-			   ((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations pci_ops = {
-	.set_subsystem = set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static void intel_me_enable(struct device *dev)
diff --git a/src/southbridge/intel/lynxpoint/sata.c b/src/southbridge/intel/lynxpoint/sata.c
index 97b55e1d29..fd611ea2ca 100644
--- a/src/southbridge/intel/lynxpoint/sata.c
+++ b/src/southbridge/intel/lynxpoint/sata.c
@@ -323,20 +323,8 @@ static void sata_enable(struct device *dev)
 	pci_write_config16(dev, 0x90, map);
 }
 
-static void sata_set_subsystem(struct device *dev, unsigned vendor,
-			       unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations sata_pci_ops = {
-	.set_subsystem    = sata_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static struct device_operations sata_ops = {
diff --git a/src/southbridge/intel/lynxpoint/serialio.c b/src/southbridge/intel/lynxpoint/serialio.c
index f5c52ef8bb..23d8125d7f 100644
--- a/src/southbridge/intel/lynxpoint/serialio.c
+++ b/src/southbridge/intel/lynxpoint/serialio.c
@@ -237,20 +237,8 @@ static void serialio_init(struct device *dev)
 	}
 }
 
-static void serialio_set_subsystem(struct device *dev, unsigned int vendor,
-				   unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations pci_ops = {
-	.set_subsystem		= serialio_set_subsystem,
+	.set_subsystem		= pci_dev_set_subsystem,
 };
 
 static struct device_operations device_ops = {
diff --git a/src/southbridge/intel/lynxpoint/smbus.c b/src/southbridge/intel/lynxpoint/smbus.c
index 307d7d4b65..c12b29eb36 100644
--- a/src/southbridge/intel/lynxpoint/smbus.c
+++ b/src/southbridge/intel/lynxpoint/smbus.c
@@ -70,20 +70,8 @@ static struct smbus_bus_operations lops_smbus_bus = {
 	.write_byte	= lsmbus_write_byte,
 };
 
-static void smbus_set_subsystem(struct device *dev, unsigned int vendor,
-				unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations smbus_pci_ops = {
-	.set_subsystem    = smbus_set_subsystem,
+	.set_subsystem    = pci_dev_set_subsystem,
 };
 
 static void smbus_read_resources(struct device *dev)
diff --git a/src/southbridge/intel/lynxpoint/usb_ehci.c b/src/southbridge/intel/lynxpoint/usb_ehci.c
index b54e36b8f8..bc86053eca 100644
--- a/src/southbridge/intel/lynxpoint/usb_ehci.c
+++ b/src/southbridge/intel/lynxpoint/usb_ehci.c
@@ -175,13 +175,7 @@ static void usb_ehci_set_subsystem(struct device *dev, unsigned int vendor,
 	/* Enable writes to protected registers. */
 	pci_write_config8(dev, 0x80, access_cntl | 1);
 
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
+	pci_dev_set_subsystem(dev, vendor, device);
 
 	/* Restore protection. */
 	pci_write_config8(dev, 0x80, access_cntl);
diff --git a/src/southbridge/intel/lynxpoint/usb_xhci.c b/src/southbridge/intel/lynxpoint/usb_xhci.c
index ee25e5c409..ddba351aae 100644
--- a/src/southbridge/intel/lynxpoint/usb_xhci.c
+++ b/src/southbridge/intel/lynxpoint/usb_xhci.c
@@ -373,20 +373,8 @@ static void usb_xhci_init(struct device *dev)
 	}
 }
 
-static void usb_xhci_set_subsystem(struct device *dev, unsigned int vendor,
-				   unsigned int device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations lops_pci = {
-	.set_subsystem = &usb_xhci_set_subsystem,
+	.set_subsystem = &pci_dev_set_subsystem,
 };
 
 static struct device_operations usb_xhci_ops = {
diff --git a/src/southbridge/nvidia/mcp55/azalia.c b/src/southbridge/nvidia/mcp55/azalia.c
index 86ab5b965a..f393297d2c 100644
--- a/src/southbridge/nvidia/mcp55/azalia.c
+++ b/src/southbridge/nvidia/mcp55/azalia.c
@@ -254,20 +254,8 @@ static void azalia_init(struct device *dev)
 #endif
 }
 
-static void azalia_set_subsystem(struct device *dev, unsigned vendor,
-				 unsigned device)
-{
-	if (!vendor || !device) {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				pci_read_config32(dev, PCI_VENDOR_ID));
-	} else {
-		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
-				((device & 0xffff) << 16) | (vendor & 0xffff));
-	}
-}
-
 static struct pci_operations azalia_pci_ops = {
-	.set_subsystem = azalia_set_subsystem,
+	.set_subsystem = pci_dev_set_subsystem,
 };
 
 static struct device_operations azalia_ops = {