diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 9816d5a4d176ff938561f88eae5119145a830bf3..ef757147cbf9ae2e63c74c44a7c01d9528db9e10 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -256,12 +256,6 @@ pcibios_fixup_bus(struct pci_bus *bus)
 	}
 }
 
-void __init
-pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 int
 pcibios_enable_device(struct pci_dev *dev, int mask)
 {
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index 2b2f25e7fef5f07f545f8f5f0b9866a945a9026a..9cf16b83bbb5029e0c350ebec9c4952167d9f50e 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -270,15 +270,6 @@ static void __devinit pci_fixup_it8152(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_8152, pci_fixup_it8152);
 
-
-
-void __devinit pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	if (debug_pci)
-		printk("PCI: Assigning IRQ %02d to %s\n", irq, pci_name(dev));
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 /*
  * If the bus contains any of these devices, then we must not turn on
  * parity checking of any kind.  Currently this is CyberPro 20x0 only.
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 81acc7a57f3e1e48cb364ed34c3a6ecf69710f89..a7ebe94402715200ef1a72d1e3c5908d48135ce1 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -461,14 +461,6 @@ void pcibios_set_master (struct pci_dev *dev)
 	/* No special bus mastering setup handling */
 }
 
-void __devinit
-pcibios_update_irq (struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-
-	/* ??? FIXME -- record old value for shutdown.  */
-}
-
 int
 pcibios_enable_device (struct pci_dev *dev, int mask)
 {
diff --git a/arch/m68k/kernel/pcibios.c b/arch/m68k/kernel/pcibios.c
index b2988aa1840bd55160277c14a6ac7a1721fdefe3..73fa0b56a06c7613523bdd5297be2da86df64647 100644
--- a/arch/m68k/kernel/pcibios.c
+++ b/arch/m68k/kernel/pcibios.c
@@ -87,11 +87,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
 	return 0;
 }
 
-void pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 void __devinit pcibios_fixup_bus(struct pci_bus *bus)
 {
 	struct pci_dev *dev;
diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c
index 690356808f8ac3cf7ab6ec7df4bee97f7144ef61..04e35bcde07cd2ff748dc957ae04314bd28d8ae9 100644
--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -313,12 +313,6 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
 	}
 }
 
-void __init
-pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 #ifdef CONFIG_HOTPLUG
 EXPORT_SYMBOL(PCIBIOS_MIN_IO);
 EXPORT_SYMBOL(PCIBIOS_MIN_MEM);
diff --git a/arch/sh/drivers/pci/pci.c b/arch/sh/drivers/pci/pci.c
index 40db2d0aef3f36ab3873d985a7117383c64d0626..a7e078f2e2e46d660abd41779cc856ac144bd9dc 100644
--- a/arch/sh/drivers/pci/pci.c
+++ b/arch/sh/drivers/pci/pci.c
@@ -192,11 +192,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
 	return pci_enable_resources(dev, mask);
 }
 
-void __init pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 static void __init
 pcibios_bus_report_status_early(struct pci_channel *hose,
 				int top_bus, int current_bus,
diff --git a/arch/sparc/kernel/leon_pci.c b/arch/sparc/kernel/leon_pci.c
index 21dcda75a520b3d97ffd7c8ee82d6432df547bbf..fc05211615685a787ab0a38aa80fe067db105068 100644
--- a/arch/sparc/kernel/leon_pci.c
+++ b/arch/sparc/kernel/leon_pci.c
@@ -102,15 +102,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
 	return pci_enable_resources(dev, mask);
 }
 
-void __devinit pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-#ifdef CONFIG_PCI_DEBUG
-	printk(KERN_DEBUG "LEONPCI: Assigning IRQ %02d to %s\n", irq,
-		pci_name(dev));
-#endif
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 /* in/out routines taken from pcic.c
  *
  * This probably belongs here rather than ioport.c because
diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index 065b88c4f868a67da15d6025f24ff3df453372dc..acc8c838ff72d77dfd30cb01d96fe76316a69f53 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -622,10 +622,6 @@ void __devinit pcibios_fixup_bus(struct pci_bus *pbus)
 {
 }
 
-void pcibios_update_irq(struct pci_dev *pdev, int irq)
-{
-}
-
 resource_size_t pcibios_align_resource(void *data, const struct resource *res,
 				resource_size_t size, resource_size_t align)
 {
diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index d2292be6fb90b5e240eeca155d1ead9f9ff279cc..759822687e8f58a2b002b82a269b1e83ba4c6ef3 100644
--- a/arch/tile/kernel/pci.c
+++ b/arch/tile/kernel/pci.c
@@ -389,14 +389,6 @@ void pcibios_set_master(struct pci_dev *dev)
 	/* No special bus mastering setup handling. */
 }
 
-/*
- * This is called from the generic Linux layer.
- */
-void __devinit pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 /*
  * Enable memory and/or address decoding, as appropriate, for the
  * device described by the 'dev' struct.
diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c
index 0e213e35ffc32548c9259cbadb41254b04b403a6..2ba6d052f85d641d8ae16cb19ffbf313b649d11d 100644
--- a/arch/tile/kernel/pci_gx.c
+++ b/arch/tile/kernel/pci_gx.c
@@ -1033,14 +1033,6 @@ char __devinit *pcibios_setup(char *str)
 	return str;
 }
 
-/*
- * This is called from the generic Linux layer.
- */
-void __devinit pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 /*
  * Enable memory address decoding, as appropriate, for the
  * device described by the 'dev' struct. The I/O decoding
diff --git a/arch/unicore32/kernel/pci.c b/arch/unicore32/kernel/pci.c
index 46cb6c9de6c94dc7e8cabe6f880cdd16023f27f6..b0056f68d3211cb8ccf31d2d417e33ebcd3ef7b2 100644
--- a/arch/unicore32/kernel/pci.c
+++ b/arch/unicore32/kernel/pci.c
@@ -154,14 +154,6 @@ void __init puv3_pci_adjust_zones(unsigned long *zone_size,
 	zhole_size[0] = 0;
 }
 
-void __devinit pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	if (debug_pci)
-		printk(KERN_DEBUG "PCI: Assigning IRQ %02d to %s\n",
-				irq, pci_name(dev));
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 /*
  * If the bus contains any of these devices, then we must not turn on
  * parity checking of any kind.
diff --git a/arch/x86/pci/visws.c b/arch/x86/pci/visws.c
index 6f2f8eeed17143276bb6352841e02fc7abbcc406..3e6d2a6db86681d3a1731f7a7956711bdcd36e50 100644
--- a/arch/x86/pci/visws.c
+++ b/arch/x86/pci/visws.c
@@ -62,11 +62,6 @@ static int __init visws_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 	return irq;
 }
 
-void __init pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 int __init pci_visws_init(void)
 {
 	pcibios_enable_irq = &pci_visws_enable_irq;
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index 69759e9cb3ea8b6efd9ddca47c3578c7a5d253a8..54354de38a706f0f5e72bb2661f6f768c9fcae3b 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -210,14 +210,6 @@ void pcibios_set_master(struct pci_dev *dev)
 	/* No special bus mastering setup handling */
 }
 
-/* the next one is stolen from the alpha port... */
-
-void __init
-pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
 int pcibios_enable_device(struct pci_dev *dev, int mask)
 {
 	u16 cmd, old_cmd;
diff --git a/drivers/pci/setup-irq.c b/drivers/pci/setup-irq.c
index eb219a1d16f760f4596dded6e9811b006946586d..9bd6864ec5d3fc3b6e18e2505f884a6dc8f94166 100644
--- a/drivers/pci/setup-irq.c
+++ b/drivers/pci/setup-irq.c
@@ -17,8 +17,13 @@
 #include <linux/ioport.h>
 #include <linux/cache.h>
 
+void __weak pcibios_update_irq(struct pci_dev *dev, int irq)
+{
+	dev_dbg(&dev->dev, "assigning IRQ %02d\n", irq);
+	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
+}
 
-static void __init
+static void
 pdev_fixup_irq(struct pci_dev *dev,
 	       u8 (*swizzle)(struct pci_dev *, u8 *),
 	       int (*map_irq)(const struct pci_dev *, u8, u8))
@@ -54,7 +59,7 @@ pdev_fixup_irq(struct pci_dev *dev,
 	pcibios_update_irq(dev, irq);
 }
 
-void __init
+void
 pci_fixup_irqs(u8 (*swizzle)(struct pci_dev *, u8 *),
 	       int (*map_irq)(const struct pci_dev *, u8, u8))
 {