diff --git a/arch/alpha/kernel/sys_alcor.c b/arch/alpha/kernel/sys_alcor.c
index 0e14399..8606d77 100644
--- a/arch/alpha/kernel/sys_alcor.c
+++ b/arch/alpha/kernel/sys_alcor.c
@@ -183,7 +183,7 @@ alcor_init_irq(void)
  */
 
 static int __init
-alcor_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+alcor_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[7][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
diff --git a/arch/alpha/kernel/sys_cabriolet.c b/arch/alpha/kernel/sys_cabriolet.c
index c8c112d..1029619 100644
--- a/arch/alpha/kernel/sys_cabriolet.c
+++ b/arch/alpha/kernel/sys_cabriolet.c
@@ -175,7 +175,7 @@ pc164_init_irq(void)
  */
 
 static inline int __init
-eb66p_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+eb66p_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[5][5] __initdata = {
 		/*INT  INTA  INTB  INTC   INTD */
@@ -205,7 +205,7 @@ eb66p_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  */
 
 static inline int __init
-cabriolet_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+cabriolet_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[5][5] __initdata = {
 		/*INT   INTA  INTB  INTC   INTD */
@@ -289,7 +289,7 @@ cia_cab_init_pci(void)
  */
 
 static inline int __init
-alphapc164_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+alphapc164_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[7][5] __initdata = {
 		/*INT   INTA  INTB   INTC   INTD */
diff --git a/arch/alpha/kernel/sys_dp264.c b/arch/alpha/kernel/sys_dp264.c
index f885682..bb7f0c7 100644
--- a/arch/alpha/kernel/sys_dp264.c
+++ b/arch/alpha/kernel/sys_dp264.c
@@ -382,7 +382,7 @@ isa_irq_fixup(struct pci_dev *dev, int irq)
 }
 
 static int __init
-dp264_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+dp264_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[6][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
@@ -404,7 +404,7 @@ dp264_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 }
 
 static int __init
-monet_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+monet_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[13][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
@@ -466,7 +466,7 @@ monet_swizzle(struct pci_dev *dev, u8 *pinp)
 }
 
 static int __init
-webbrick_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+webbrick_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[13][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
@@ -488,7 +488,7 @@ webbrick_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 }
 
 static int __init
-clipper_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+clipper_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[7][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
diff --git a/arch/alpha/kernel/sys_eb64p.c b/arch/alpha/kernel/sys_eb64p.c
index a7a23b4..3c6c13c 100644
--- a/arch/alpha/kernel/sys_eb64p.c
+++ b/arch/alpha/kernel/sys_eb64p.c
@@ -169,7 +169,7 @@ eb64p_init_irq(void)
  */
 
 static int __init
-eb64p_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+eb64p_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[5][5] __initdata = {
 		/*INT  INTA  INTB  INTC   INTD */
diff --git a/arch/alpha/kernel/sys_eiger.c b/arch/alpha/kernel/sys_eiger.c
index a60cd5b..35f480d 100644
--- a/arch/alpha/kernel/sys_eiger.c
+++ b/arch/alpha/kernel/sys_eiger.c
@@ -144,7 +144,7 @@ eiger_init_irq(void)
 }
 
 static int __init
-eiger_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+eiger_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	u8 irq_orig;
 
diff --git a/arch/alpha/kernel/sys_marvel.c b/arch/alpha/kernel/sys_marvel.c
index 388b99d..95cfc83 100644
--- a/arch/alpha/kernel/sys_marvel.c
+++ b/arch/alpha/kernel/sys_marvel.c
@@ -318,7 +318,7 @@ marvel_init_irq(void)
 }
 
 static int 
-marvel_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+marvel_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	struct pci_controller *hose = dev->sysdata;
 	struct io7_port *io7_port = hose->sysdata;
diff --git a/arch/alpha/kernel/sys_miata.c b/arch/alpha/kernel/sys_miata.c
index 61ccd95..258da68 100644
--- a/arch/alpha/kernel/sys_miata.c
+++ b/arch/alpha/kernel/sys_miata.c
@@ -151,7 +151,7 @@ miata_init_irq(void)
  */
 
 static int __init
-miata_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+miata_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
         static char irq_tab[18][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
diff --git a/arch/alpha/kernel/sys_mikasa.c b/arch/alpha/kernel/sys_mikasa.c
index 0e6e469..c0fd728 100644
--- a/arch/alpha/kernel/sys_mikasa.c
+++ b/arch/alpha/kernel/sys_mikasa.c
@@ -146,7 +146,7 @@ mikasa_init_irq(void)
  */
 
 static int __init
-mikasa_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+mikasa_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[8][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
index 99c0f46..4112200 100644
--- a/arch/alpha/kernel/sys_nautilus.c
+++ b/arch/alpha/kernel/sys_nautilus.c
@@ -65,7 +65,7 @@ nautilus_init_irq(void)
 }
 
 static int __init
-nautilus_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+nautilus_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	/* Preserve the IRQ set up by the console.  */
 
diff --git a/arch/alpha/kernel/sys_noritake.c b/arch/alpha/kernel/sys_noritake.c
index a00ac70..2172528 100644
--- a/arch/alpha/kernel/sys_noritake.c
+++ b/arch/alpha/kernel/sys_noritake.c
@@ -194,7 +194,7 @@ noritake_init_irq(void)
  */
 
 static int __init
-noritake_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+noritake_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[15][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
diff --git a/arch/alpha/kernel/sys_rawhide.c b/arch/alpha/kernel/sys_rawhide.c
index 7f52161..a125d6b 100644
--- a/arch/alpha/kernel/sys_rawhide.c
+++ b/arch/alpha/kernel/sys_rawhide.c
@@ -223,7 +223,7 @@ rawhide_init_irq(void)
  */
 
 static int __init
-rawhide_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+rawhide_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[5][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
diff --git a/arch/alpha/kernel/sys_ruffian.c b/arch/alpha/kernel/sys_ruffian.c
index 8de1046..915b975 100644
--- a/arch/alpha/kernel/sys_ruffian.c
+++ b/arch/alpha/kernel/sys_ruffian.c
@@ -120,7 +120,7 @@ ruffian_kill_arch (int mode)
  */
 
 static int __init
-ruffian_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+ruffian_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
         static char irq_tab[11][5] __initdata = {
 	      /*INT  INTA INTB INTC INTD */
diff --git a/arch/alpha/kernel/sys_rx164.c b/arch/alpha/kernel/sys_rx164.c
index 216d94d..b172b27 100644
--- a/arch/alpha/kernel/sys_rx164.c
+++ b/arch/alpha/kernel/sys_rx164.c
@@ -144,7 +144,7 @@ rx164_init_irq(void)
  */
 
 static int __init
-rx164_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+rx164_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 #if 0
 	static char irq_tab_pass1[6][5] __initdata = {
diff --git a/arch/alpha/kernel/sys_sable.c b/arch/alpha/kernel/sys_sable.c
index da714e4..98d1dbf 100644
--- a/arch/alpha/kernel/sys_sable.c
+++ b/arch/alpha/kernel/sys_sable.c
@@ -194,7 +194,7 @@ sable_init_irq(void)
  */
 
 static int __init
-sable_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+sable_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[9][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
@@ -376,7 +376,7 @@ lynx_init_irq(void)
  */
 
 static int __init
-lynx_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+lynx_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[19][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
diff --git a/arch/alpha/kernel/sys_sio.c b/arch/alpha/kernel/sys_sio.c
index 85b4aea..47bec1e 100644
--- a/arch/alpha/kernel/sys_sio.c
+++ b/arch/alpha/kernel/sys_sio.c
@@ -146,7 +146,7 @@ sio_fixup_irq_levels(unsigned int level_bits)
 }
 
 static inline int __init
-noname_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+noname_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	/*
 	 * The Noname board has 5 PCI slots with each of the 4
@@ -185,7 +185,7 @@ noname_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 }
 
 static inline int __init
-p2k_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+p2k_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[][5] __initdata = {
 		/*INT A   B   C   D */
diff --git a/arch/alpha/kernel/sys_sx164.c b/arch/alpha/kernel/sys_sx164.c
index 41d4ad4..73e1c31 100644
--- a/arch/alpha/kernel/sys_sx164.c
+++ b/arch/alpha/kernel/sys_sx164.c
@@ -95,7 +95,7 @@ sx164_init_irq(void)
  */
 
 static int __init
-sx164_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+sx164_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[5][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
diff --git a/arch/alpha/kernel/sys_takara.c b/arch/alpha/kernel/sys_takara.c
index a31f8cd..2ae99ad 100644
--- a/arch/alpha/kernel/sys_takara.c
+++ b/arch/alpha/kernel/sys_takara.c
@@ -157,7 +157,7 @@ takara_init_irq(void)
  */
 
 static int __init
-takara_map_irq_srm(struct pci_dev *dev, u8 slot, u8 pin)
+takara_map_irq_srm(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[15][5] __initdata = {
 		{ 16+3, 16+3, 16+3, 16+3, 16+3},   /* slot  6 == device 3 */
@@ -188,7 +188,7 @@ takara_map_irq_srm(struct pci_dev *dev, u8 slot, u8 pin)
 }
 
 static int __init
-takara_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+takara_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[15][5] __initdata = {
 		{ 16+3, 16+3, 16+3, 16+3, 16+3},   /* slot  6 == device 3 */
diff --git a/arch/alpha/kernel/sys_titan.c b/arch/alpha/kernel/sys_titan.c
index 6994407..f47b30a 100644
--- a/arch/alpha/kernel/sys_titan.c
+++ b/arch/alpha/kernel/sys_titan.c
@@ -305,7 +305,7 @@ titan_late_init(void)
 }
 
 static int __devinit
-titan_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+titan_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	u8 intline;
 	int irq;
diff --git a/arch/alpha/kernel/sys_wildfire.c b/arch/alpha/kernel/sys_wildfire.c
index d92cdc7..17c85a6 100644
--- a/arch/alpha/kernel/sys_wildfire.c
+++ b/arch/alpha/kernel/sys_wildfire.c
@@ -290,7 +290,7 @@ wildfire_device_interrupt(unsigned long vector)
  */
 
 static int __init
-wildfire_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+wildfire_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static char irq_tab[8][5] __initdata = {
 		/*INT    INTA   INTB   INTC   INTD */
diff --git a/arch/arm/common/it8152.c b/arch/arm/common/it8152.c
index 7a21927..17239bd 100644
--- a/arch/arm/common/it8152.c
+++ b/arch/arm/common/it8152.c
@@ -144,7 +144,7 @@ void it8152_irq_demux(unsigned int irq, struct irq_desc *desc)
 }
 
 /* mapping for on-chip devices */
-int __init it8152_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+int __init it8152_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	if ((dev->vendor == PCI_VENDOR_ID_ITE) &&
 	    (dev->device == PCI_DEVICE_ID_ITE_8152)) {
diff --git a/arch/arm/include/asm/hardware/it8152.h b/arch/arm/include/asm/hardware/it8152.h
index b2f95c7..b3fea38 100644
--- a/arch/arm/include/asm/hardware/it8152.h
+++ b/arch/arm/include/asm/hardware/it8152.h
@@ -105,7 +105,7 @@ struct pci_sys_data;
 
 extern void it8152_irq_demux(unsigned int irq, struct irq_desc *desc);
 extern void it8152_init_irq(void);
-extern int it8152_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin);
+extern int it8152_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin);
 extern int it8152_pci_setup(int nr, struct pci_sys_data *sys);
 extern struct pci_bus *it8152_pci_scan_bus(int nr, struct pci_sys_data *sys);
 
diff --git a/arch/arm/include/asm/mach/pci.h b/arch/arm/include/asm/mach/pci.h
index 16330bd..186efd4 100644
--- a/arch/arm/include/asm/mach/pci.h
+++ b/arch/arm/include/asm/mach/pci.h
@@ -25,7 +25,7 @@ struct hw_pci {
 	void		(*preinit)(void);
 	void		(*postinit)(void);
 	u8		(*swizzle)(struct pci_dev *dev, u8 *pin);
-	int		(*map_irq)(struct pci_dev *dev, u8 slot, u8 pin);
+	int		(*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
 };
 
 /*
@@ -44,7 +44,7 @@ struct pci_sys_data {
 					/* Bridge swizzling			*/
 	u8		(*swizzle)(struct pci_dev *, u8 *);
 					/* IRQ mapping				*/
-	int		(*map_irq)(struct pci_dev *, u8, u8);
+	int		(*map_irq)(const struct pci_dev *, u8, u8);
 	struct hw_pci	*hw;
 	void		*private_data;	/* platform controller private data	*/
 };
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c
index e4ee050..d6df359 100644
--- a/arch/arm/kernel/bios32.c
+++ b/arch/arm/kernel/bios32.c
@@ -476,7 +476,7 @@ static u8 __devinit pcibios_swizzle(struct pci_dev *dev, u8 *pin)
 /*
  * Map a slot/pin to an IRQ.
  */
-static int pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	struct pci_sys_data *sys = dev->sysdata;
 	int irq = -1;
diff --git a/arch/arm/mach-cns3xxx/pcie.c b/arch/arm/mach-cns3xxx/pcie.c
index 78defd7..725b94f 100644
--- a/arch/arm/mach-cns3xxx/pcie.c
+++ b/arch/arm/mach-cns3xxx/pcie.c
@@ -172,7 +172,7 @@ static struct pci_bus *cns3xxx_pci_scan_bus(int nr, struct pci_sys_data *sys)
 	return pci_scan_bus(sys->busnr, &cns3xxx_pcie_ops, sys);
 }
 
-static int cns3xxx_pcie_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int cns3xxx_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	struct cns3xxx_pcie *cnspci = pdev_to_cnspci(dev);
 	int irq = cnspci->irqs[slot];
diff --git a/arch/arm/mach-dove/pcie.c b/arch/arm/mach-dove/pcie.c
index 502d1ca..c6e93aa 100644
--- a/arch/arm/mach-dove/pcie.c
+++ b/arch/arm/mach-dove/pcie.c
@@ -192,7 +192,7 @@ dove_pcie_scan_bus(int nr, struct pci_sys_data *sys)
 	return bus;
 }
 
-static int __init dove_pcie_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init dove_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	struct pcie_port *pp = bus_to_port(dev->bus->number);
 
diff --git a/arch/arm/mach-footbridge/cats-pci.c b/arch/arm/mach-footbridge/cats-pci.c
index ae3e1c8..32321f6 100644
--- a/arch/arm/mach-footbridge/cats-pci.c
+++ b/arch/arm/mach-footbridge/cats-pci.c
@@ -16,7 +16,7 @@
 /* cats host-specific stuff */
 static int irqmap_cats[] __initdata = { IRQ_PCI, IRQ_IN0, IRQ_IN1, IRQ_IN3 };
 
-static int __init cats_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init cats_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	if (dev->irq >= 255)
 		return -1;	/* not a valid interrupt. */
diff --git a/arch/arm/mach-footbridge/ebsa285-pci.c b/arch/arm/mach-footbridge/ebsa285-pci.c
index e5ab5bd..511c673 100644
--- a/arch/arm/mach-footbridge/ebsa285-pci.c
+++ b/arch/arm/mach-footbridge/ebsa285-pci.c
@@ -15,7 +15,7 @@
 
 static int irqmap_ebsa285[] __initdata = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI };
 
-static int __init ebsa285_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init ebsa285_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	if (dev->vendor == PCI_VENDOR_ID_CONTAQ &&
 	    dev->device == PCI_DEVICE_ID_CONTAQ_82C693)
diff --git a/arch/arm/mach-footbridge/netwinder-pci.c b/arch/arm/mach-footbridge/netwinder-pci.c
index e263d6d..6218761 100644
--- a/arch/arm/mach-footbridge/netwinder-pci.c
+++ b/arch/arm/mach-footbridge/netwinder-pci.c
@@ -17,7 +17,7 @@
  * We now use the slot ID instead of the device identifiers to select
  * which interrupt is routed where.
  */
-static int __init netwinder_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	switch (slot) {
 	case 0:  /* host bridge */
diff --git a/arch/arm/mach-footbridge/personal-pci.c b/arch/arm/mach-footbridge/personal-pci.c
index d5fca95..aeb651d 100644
--- a/arch/arm/mach-footbridge/personal-pci.c
+++ b/arch/arm/mach-footbridge/personal-pci.c
@@ -18,7 +18,8 @@ static int irqmap_personal_server[] __initdata = {
 	IRQ_DOORBELLHOST, IRQ_DMA1, IRQ_DMA2, IRQ_PCI
 };
 
-static int __init personal_server_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init personal_server_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	unsigned char line;
 
diff --git a/arch/arm/mach-integrator/pci.c b/arch/arm/mach-integrator/pci.c
index 2fdb954..520b6bf 100644
--- a/arch/arm/mach-integrator/pci.c
+++ b/arch/arm/mach-integrator/pci.c
@@ -95,7 +95,7 @@ static int irq_tab[4] __initdata = {
  * map the specified device/slot/pin to an IRQ.  This works out such
  * that slot 9 pin 1 is INT0, pin 2 is INT1, and slot 10 pin 1 is INT1.
  */
-static int __init integrator_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init integrator_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int intnr = ((slot - 9) + (pin - 1)) & 3;
 
diff --git a/arch/arm/mach-iop13xx/iq81340mc.c b/arch/arm/mach-iop13xx/iq81340mc.c
index 9b5a63f5..23dfaff 100644
--- a/arch/arm/mach-iop13xx/iq81340mc.c
+++ b/arch/arm/mach-iop13xx/iq81340mc.c
@@ -30,7 +30,7 @@
 extern int init_atu; /* Flag to select which ATU(s) to initialize / disable */
 
 static int __init
-iq81340mc_pcix_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
+iq81340mc_pcix_map_irq(const struct pci_dev *dev, u8 idsel, u8 pin)
 {
 	switch (idsel) {
 	case 1:
diff --git a/arch/arm/mach-iop13xx/pci.c b/arch/arm/mach-iop13xx/pci.c
index ba3dae3..48a3693 100644
--- a/arch/arm/mach-iop13xx/pci.c
+++ b/arch/arm/mach-iop13xx/pci.c
@@ -390,7 +390,7 @@ static int iop13xx_atue_pci_status(int clear)
 }
 
 static int
-iop13xx_pcie_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
+iop13xx_pcie_map_irq(const struct pci_dev *dev, u8 idsel, u8 pin)
 {
 	WARN_ON(idsel != 0);
 
diff --git a/arch/arm/mach-iop32x/em7210.c b/arch/arm/mach-iop32x/em7210.c
index 779f924..6cbffbf 100644
--- a/arch/arm/mach-iop32x/em7210.c
+++ b/arch/arm/mach-iop32x/em7210.c
@@ -81,7 +81,7 @@ void __init em7210_map_io(void)
 #define INTD	IRQ_IOP32X_XINT3
 
 static int __init
-em7210_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+em7210_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static int pci_irq_table[][4] = {
 		/*
diff --git a/arch/arm/mach-iop32x/glantank.c b/arch/arm/mach-iop32x/glantank.c
index c6b6f9c..ceef5d4 100644
--- a/arch/arm/mach-iop32x/glantank.c
+++ b/arch/arm/mach-iop32x/glantank.c
@@ -77,7 +77,7 @@ void __init glantank_map_io(void)
 #define INTD	IRQ_IOP32X_XINT3
 
 static int __init
-glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+glantank_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static int pci_irq_table[][4] = {
 		/*
diff --git a/arch/arm/mach-iop32x/iq31244.c b/arch/arm/mach-iop32x/iq31244.c
index fde962c..3a62514 100644
--- a/arch/arm/mach-iop32x/iq31244.c
+++ b/arch/arm/mach-iop32x/iq31244.c
@@ -103,7 +103,7 @@ void __init iq31244_map_io(void)
  * EP80219/IQ31244 PCI.
  */
 static int __init
-ep80219_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+ep80219_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
@@ -139,7 +139,7 @@ static struct hw_pci ep80219_pci __initdata = {
 };
 
 static int __init
-iq31244_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+iq31244_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-iop32x/iq80321.c b/arch/arm/mach-iop32x/iq80321.c
index 3a95950..35b7e69 100644
--- a/arch/arm/mach-iop32x/iq80321.c
+++ b/arch/arm/mach-iop32x/iq80321.c
@@ -71,7 +71,7 @@ void __init iq80321_map_io(void)
  * IQ80321 PCI.
  */
 static int __init
-iq80321_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+iq80321_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-iop32x/n2100.c b/arch/arm/mach-iop32x/n2100.c
index 626aa37..1a374ea 100644
--- a/arch/arm/mach-iop32x/n2100.c
+++ b/arch/arm/mach-iop32x/n2100.c
@@ -78,7 +78,7 @@ void __init n2100_map_io(void)
  * N2100 PCI.
  */
 static int __init
-n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+n2100_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-iop33x/iq80331.c b/arch/arm/mach-iop33x/iq80331.c
index c565f8d..637c027 100644
--- a/arch/arm/mach-iop33x/iq80331.c
+++ b/arch/arm/mach-iop33x/iq80331.c
@@ -54,7 +54,7 @@ static struct sys_timer iq80331_timer = {
  * IQ80331 PCI.
  */
 static int __init
-iq80331_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+iq80331_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-iop33x/iq80332.c b/arch/arm/mach-iop33x/iq80332.c
index 36a9efb..90a0436 100644
--- a/arch/arm/mach-iop33x/iq80332.c
+++ b/arch/arm/mach-iop33x/iq80332.c
@@ -54,7 +54,7 @@ static struct sys_timer iq80332_timer = {
  * IQ80332 PCI.
  */
 static int __init
-iq80332_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+iq80332_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-ixp2000/enp2611.c b/arch/arm/mach-ixp2000/enp2611.c
index 88663ab..62c60ad 100644
--- a/arch/arm/mach-ixp2000/enp2611.c
+++ b/arch/arm/mach-ixp2000/enp2611.c
@@ -148,7 +148,8 @@ static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
 	return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys);
 }
 
-static int __init enp2611_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init enp2611_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-ixp2000/ixdp2400.c b/arch/arm/mach-ixp2000/ixdp2400.c
index dfffc1e..5bad1a8 100644
--- a/arch/arm/mach-ixp2000/ixdp2400.c
+++ b/arch/arm/mach-ixp2000/ixdp2400.c
@@ -78,7 +78,8 @@ int ixdp2400_pci_setup(int nr, struct pci_sys_data *sys)
 	return 1;
 }
 
-static int __init ixdp2400_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init ixdp2400_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	if (ixdp2x00_master_npu()) {
 
diff --git a/arch/arm/mach-ixp2000/ixdp2800.c b/arch/arm/mach-ixp2000/ixdp2800.c
index cd4c9bc..3d3cef8 100644
--- a/arch/arm/mach-ixp2000/ixdp2800.c
+++ b/arch/arm/mach-ixp2000/ixdp2800.c
@@ -161,7 +161,8 @@ static int __init ixdp2800_pci_setup(int nr, struct pci_sys_data *sys)
 	return 1;
 }
 
-static int __init ixdp2800_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init ixdp2800_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	if (ixdp2x00_master_npu()) {
 
diff --git a/arch/arm/mach-ixp2000/ixdp2x01.c b/arch/arm/mach-ixp2000/ixdp2x01.c
index 84835b2..be2a254 100644
--- a/arch/arm/mach-ixp2000/ixdp2x01.c
+++ b/arch/arm/mach-ixp2000/ixdp2x01.c
@@ -252,7 +252,8 @@ void __init ixdp2x01_pci_preinit(void)
 
 #define DEVPIN(dev, pin) ((pin) | ((dev) << 3))
 
-static int __init ixdp2x01_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init ixdp2x01_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	u8 bus = dev->bus->number;
 	u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
diff --git a/arch/arm/mach-ixp23xx/ixdp2351.c b/arch/arm/mach-ixp23xx/ixdp2351.c
index 8dcba17..ec028e3 100644
--- a/arch/arm/mach-ixp23xx/ixdp2351.c
+++ b/arch/arm/mach-ixp23xx/ixdp2351.c
@@ -168,7 +168,7 @@ void __init ixdp2351_init_irq(void)
  */
 #define DEVPIN(dev, pin) ((pin) | ((dev) << 3))
 
-static int __init ixdp2351_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init ixdp2351_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	u8 bus = dev->bus->number;
 	u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
diff --git a/arch/arm/mach-ixp23xx/roadrunner.c b/arch/arm/mach-ixp23xx/roadrunner.c
index 8fe0c62..844551d 100644
--- a/arch/arm/mach-ixp23xx/roadrunner.c
+++ b/arch/arm/mach-ixp23xx/roadrunner.c
@@ -56,7 +56,8 @@
 #define INTC_PIN	IXP23XX_GPIO_PIN_11
 #define INTD_PIN	IXP23XX_GPIO_PIN_12
 
-static int __init roadrunner_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
+static int __init roadrunner_map_irq(const struct pci_dev *dev, u8 idsel,
+	u8 pin)
 {
 	static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA};
 	static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD};
diff --git a/arch/arm/mach-ixp4xx/avila-pci.c b/arch/arm/mach-ixp4xx/avila-pci.c
index 162043f..8fea0a3 100644
--- a/arch/arm/mach-ixp4xx/avila-pci.c
+++ b/arch/arm/mach-ixp4xx/avila-pci.c
@@ -46,7 +46,7 @@ void __init avila_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init avila_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init avila_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static int pci_irq_table[IRQ_LINES] = {
 		IXP4XX_GPIO_IRQ(INTA),
diff --git a/arch/arm/mach-ixp4xx/coyote-pci.c b/arch/arm/mach-ixp4xx/coyote-pci.c
index 37fda7d..71f5c9c 100644
--- a/arch/arm/mach-ixp4xx/coyote-pci.c
+++ b/arch/arm/mach-ixp4xx/coyote-pci.c
@@ -37,7 +37,7 @@ void __init coyote_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init coyote_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init coyote_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	if (slot == SLOT0_DEVID)
 		return IXP4XX_GPIO_IRQ(SLOT0_INTA);
diff --git a/arch/arm/mach-ixp4xx/dsmg600-pci.c b/arch/arm/mach-ixp4xx/dsmg600-pci.c
index c7612010..0532510 100644
--- a/arch/arm/mach-ixp4xx/dsmg600-pci.c
+++ b/arch/arm/mach-ixp4xx/dsmg600-pci.c
@@ -44,7 +44,7 @@ void __init dsmg600_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init dsmg600_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init dsmg600_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static int pci_irq_table[MAX_DEV][IRQ_LINES] = {
 		{ IXP4XX_GPIO_IRQ(INTE), -1, -1 },
diff --git a/arch/arm/mach-ixp4xx/fsg-pci.c b/arch/arm/mach-ixp4xx/fsg-pci.c
index 44ccde9..d2ac803 100644
--- a/arch/arm/mach-ixp4xx/fsg-pci.c
+++ b/arch/arm/mach-ixp4xx/fsg-pci.c
@@ -38,7 +38,7 @@ void __init fsg_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init fsg_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init fsg_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static int pci_irq_table[IRQ_LINES] = {
 		IXP4XX_GPIO_IRQ(INTC),
diff --git a/arch/arm/mach-ixp4xx/gateway7001-pci.c b/arch/arm/mach-ixp4xx/gateway7001-pci.c
index fc11241..76581fb 100644
--- a/arch/arm/mach-ixp4xx/gateway7001-pci.c
+++ b/arch/arm/mach-ixp4xx/gateway7001-pci.c
@@ -35,7 +35,8 @@ void __init gateway7001_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init gateway7001_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init gateway7001_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	if (slot == 1)
 		return IRQ_IXP4XX_GPIO11;
diff --git a/arch/arm/mach-ixp4xx/goramo_mlr.c b/arch/arm/mach-ixp4xx/goramo_mlr.c
index 3e8c0e3..249404d 100644
--- a/arch/arm/mach-ixp4xx/goramo_mlr.c
+++ b/arch/arm/mach-ixp4xx/goramo_mlr.c
@@ -462,7 +462,7 @@ static void __init gmlr_pci_postinit(void)
 	}
 }
 
-static int __init gmlr_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init gmlr_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	switch(slot) {
 	case SLOT_ETHA:	return IXP4XX_GPIO_IRQ(GPIO_IRQ_ETHA);
diff --git a/arch/arm/mach-ixp4xx/gtwx5715-pci.c b/arch/arm/mach-ixp4xx/gtwx5715-pci.c
index 38cc072..d68fc06 100644
--- a/arch/arm/mach-ixp4xx/gtwx5715-pci.c
+++ b/arch/arm/mach-ixp4xx/gtwx5715-pci.c
@@ -49,7 +49,7 @@ void __init gtwx5715_pci_preinit(void)
 }
 
 
-static int __init gtwx5715_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init gtwx5715_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int rc = -1;
 
diff --git a/arch/arm/mach-ixp4xx/ixdp425-pci.c b/arch/arm/mach-ixp4xx/ixdp425-pci.c
index 58f4004..fffd8c5 100644
--- a/arch/arm/mach-ixp4xx/ixdp425-pci.c
+++ b/arch/arm/mach-ixp4xx/ixdp425-pci.c
@@ -43,7 +43,7 @@ void __init ixdp425_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init ixdp425_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init ixdp425_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static int pci_irq_table[IRQ_LINES] = {
 		IXP4XX_GPIO_IRQ(INTA),
diff --git a/arch/arm/mach-ixp4xx/ixdpg425-pci.c b/arch/arm/mach-ixp4xx/ixdpg425-pci.c
index e64f6d0..34efe75 100644
--- a/arch/arm/mach-ixp4xx/ixdpg425-pci.c
+++ b/arch/arm/mach-ixp4xx/ixdpg425-pci.c
@@ -31,7 +31,7 @@ void __init ixdpg425_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init ixdpg425_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init ixdpg425_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	if (slot == 12 || slot == 13)
 		return IRQ_IXP4XX_GPIO7;
diff --git a/arch/arm/mach-ixp4xx/nas100d-pci.c b/arch/arm/mach-ixp4xx/nas100d-pci.c
index 428d120..5434ccf 100644
--- a/arch/arm/mach-ixp4xx/nas100d-pci.c
+++ b/arch/arm/mach-ixp4xx/nas100d-pci.c
@@ -41,7 +41,7 @@ void __init nas100d_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init nas100d_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init nas100d_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static int pci_irq_table[MAX_DEV][IRQ_LINES] = {
 		{ IXP4XX_GPIO_IRQ(INTA), -1, -1 },
diff --git a/arch/arm/mach-ixp4xx/nslu2-pci.c b/arch/arm/mach-ixp4xx/nslu2-pci.c
index 2e85f76..b571605 100644
--- a/arch/arm/mach-ixp4xx/nslu2-pci.c
+++ b/arch/arm/mach-ixp4xx/nslu2-pci.c
@@ -38,7 +38,7 @@ void __init nslu2_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init nslu2_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init nslu2_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	static int pci_irq_table[IRQ_LINES] = {
 		IXP4XX_GPIO_IRQ(INTA),
diff --git a/arch/arm/mach-ixp4xx/vulcan-pci.c b/arch/arm/mach-ixp4xx/vulcan-pci.c
index 03bdec5..0bc3f34 100644
--- a/arch/arm/mach-ixp4xx/vulcan-pci.c
+++ b/arch/arm/mach-ixp4xx/vulcan-pci.c
@@ -43,7 +43,7 @@ void __init vulcan_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init vulcan_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init vulcan_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	if (slot == 1)
 		return IXP4XX_GPIO_IRQ(INTA);
diff --git a/arch/arm/mach-ixp4xx/wg302v2-pci.c b/arch/arm/mach-ixp4xx/wg302v2-pci.c
index 17f3cf5..f27dfcf 100644
--- a/arch/arm/mach-ixp4xx/wg302v2-pci.c
+++ b/arch/arm/mach-ixp4xx/wg302v2-pci.c
@@ -35,7 +35,7 @@ void __init wg302v2_pci_preinit(void)
 	ixp4xx_pci_preinit();
 }
 
-static int __init wg302v2_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init wg302v2_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	if (slot == 1)
 		return IRQ_IXP4XX_GPIO8;
diff --git a/arch/arm/mach-kirkwood/pcie.c b/arch/arm/mach-kirkwood/pcie.c
index ca294ff..77d0f54 100644
--- a/arch/arm/mach-kirkwood/pcie.c
+++ b/arch/arm/mach-kirkwood/pcie.c
@@ -244,7 +244,8 @@ kirkwood_pcie_scan_bus(int nr, struct pci_sys_data *sys)
 	return bus;
 }
 
-static int __init kirkwood_pcie_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init kirkwood_pcie_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	struct pcie_port *pp = bus_to_port(dev->bus);
 
diff --git a/arch/arm/mach-ks8695/board-dsm320.c b/arch/arm/mach-ks8695/board-dsm320.c
index ada92b6..1338cb3 100644
--- a/arch/arm/mach-ks8695/board-dsm320.c
+++ b/arch/arm/mach-ks8695/board-dsm320.c
@@ -34,7 +34,7 @@
 #include "generic.h"
 
 #ifdef CONFIG_PCI
-static int dsm320_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int dsm320_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	switch (slot) {
 	case 0:
diff --git a/arch/arm/mach-ks8695/board-micrel.c b/arch/arm/mach-ks8695/board-micrel.c
index c7ad09b..e2e3cba 100644
--- a/arch/arm/mach-ks8695/board-micrel.c
+++ b/arch/arm/mach-ks8695/board-micrel.c
@@ -24,7 +24,7 @@
 #include "generic.h"
 
 #ifdef CONFIG_PCI
-static int micrel_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int micrel_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	return KS8695_IRQ_EXTERN0;
 }
diff --git a/arch/arm/mach-ks8695/include/mach/devices.h b/arch/arm/mach-ks8695/include/mach/devices.h
index 2744fec..85a3c9a 100644
--- a/arch/arm/mach-ks8695/include/mach/devices.h
+++ b/arch/arm/mach-ks8695/include/mach/devices.h
@@ -30,7 +30,7 @@ extern void __init ks8695_init_leds(u8 cpu_led, u8 timer_led);
 
 struct ks8695_pci_cfg {
 	short mode;
-	int (*map_irq)(struct pci_dev *, u8, u8);
+	int (*map_irq)(const struct pci_dev *, u8, u8);
 };
 extern __init void ks8695_init_pci(struct ks8695_pci_cfg *);
 
diff --git a/arch/arm/mach-mv78xx0/pcie.c b/arch/arm/mach-mv78xx0/pcie.c
index a560439..8854d8c 100644
--- a/arch/arm/mach-mv78xx0/pcie.c
+++ b/arch/arm/mach-mv78xx0/pcie.c
@@ -259,7 +259,8 @@ mv78xx0_pcie_scan_bus(int nr, struct pci_sys_data *sys)
 	return bus;
 }
 
-static int __init mv78xx0_pcie_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init mv78xx0_pcie_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	struct pcie_port *pp = bus_to_port(dev->bus->number);
 
diff --git a/arch/arm/mach-orion5x/common.h b/arch/arm/mach-orion5x/common.h
index f2b2b35..3e5499d 100644
--- a/arch/arm/mach-orion5x/common.h
+++ b/arch/arm/mach-orion5x/common.h
@@ -51,7 +51,7 @@ void orion5x_pci_disable(void);
 void orion5x_pci_set_cardbus_mode(void);
 int orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys);
 struct pci_bus *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys);
-int orion5x_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin);
+int orion5x_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin);
 
 struct machine_desc;
 struct meminfo;
diff --git a/arch/arm/mach-orion5x/db88f5281-setup.c b/arch/arm/mach-orion5x/db88f5281-setup.c
index f95d3cb..a3e3e9e 100644
--- a/arch/arm/mach-orion5x/db88f5281-setup.c
+++ b/arch/arm/mach-orion5x/db88f5281-setup.c
@@ -237,7 +237,8 @@ void __init db88f5281_pci_preinit(void)
 	}
 }
 
-static int __init db88f5281_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init db88f5281_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-orion5x/dns323-setup.c b/arch/arm/mach-orion5x/dns323-setup.c
index 855e0e7..a6eddae 100644
--- a/arch/arm/mach-orion5x/dns323-setup.c
+++ b/arch/arm/mach-orion5x/dns323-setup.c
@@ -70,14 +70,14 @@ enum {
  * PCI setup
  */
 
-static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init dns323_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
 	/*
 	 * Check for devices with hard-wired IRQs.
 	 */
-	irq = orion5x_pci_map_irq(dev, slot, pin);
+	irq = orion5x_pci_map_irq(const dev, slot, pin);
 	if (irq != -1)
 		return irq;
 
diff --git a/arch/arm/mach-orion5x/kurobox_pro-setup.c b/arch/arm/mach-orion5x/kurobox_pro-setup.c
index c0eb646..0038124 100644
--- a/arch/arm/mach-orion5x/kurobox_pro-setup.c
+++ b/arch/arm/mach-orion5x/kurobox_pro-setup.c
@@ -119,7 +119,8 @@ static struct platform_device kurobox_pro_nor_flash = {
  * PCI
  ****************************************************************************/
 
-static int __init kurobox_pro_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init kurobox_pro_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-orion5x/mss2-setup.c b/arch/arm/mach-orion5x/mss2-setup.c
index 59263b7..ef3bb8e 100644
--- a/arch/arm/mach-orion5x/mss2-setup.c
+++ b/arch/arm/mach-orion5x/mss2-setup.c
@@ -73,7 +73,7 @@ static struct platform_device mss2_nor_flash = {
 /****************************************************************************
  * PCI setup
  ****************************************************************************/
-static int __init mss2_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init mss2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-orion5x/pci.c b/arch/arm/mach-orion5x/pci.c
index e8706f1..0415250 100644
--- a/arch/arm/mach-orion5x/pci.c
+++ b/arch/arm/mach-orion5x/pci.c
@@ -587,7 +587,7 @@ struct pci_bus __init *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys
 	return bus;
 }
 
-int __init orion5x_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+int __init orion5x_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int bus = dev->bus->number;
 
diff --git a/arch/arm/mach-orion5x/rd88f5181l-fxo-setup.c b/arch/arm/mach-orion5x/rd88f5181l-fxo-setup.c
index 9eec7c2..291d22b 100644
--- a/arch/arm/mach-orion5x/rd88f5181l-fxo-setup.c
+++ b/arch/arm/mach-orion5x/rd88f5181l-fxo-setup.c
@@ -131,7 +131,7 @@ static void __init rd88f5181l_fxo_init(void)
 }
 
 static int __init
-rd88f5181l_fxo_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+rd88f5181l_fxo_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-orion5x/rd88f5181l-ge-setup.c b/arch/arm/mach-orion5x/rd88f5181l-ge-setup.c
index 0cc90bb..3f02362 100644
--- a/arch/arm/mach-orion5x/rd88f5181l-ge-setup.c
+++ b/arch/arm/mach-orion5x/rd88f5181l-ge-setup.c
@@ -140,7 +140,7 @@ static void __init rd88f5181l_ge_init(void)
 }
 
 static int __init
-rd88f5181l_ge_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+rd88f5181l_ge_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-orion5x/rd88f5182-setup.c b/arch/arm/mach-orion5x/rd88f5182-setup.c
index 48da39b..27fd38e 100644
--- a/arch/arm/mach-orion5x/rd88f5182-setup.c
+++ b/arch/arm/mach-orion5x/rd88f5182-setup.c
@@ -172,7 +172,8 @@ void __init rd88f5182_pci_preinit(void)
 	}
 }
 
-static int __init rd88f5182_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init rd88f5182_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-orion5x/terastation_pro2-setup.c b/arch/arm/mach-orion5x/terastation_pro2-setup.c
index 29ce826..a34e4fa 100644
--- a/arch/arm/mach-orion5x/terastation_pro2-setup.c
+++ b/arch/arm/mach-orion5x/terastation_pro2-setup.c
@@ -100,7 +100,7 @@ void __init tsp2_pci_preinit(void)
 	}
 }
 
-static int __init tsp2_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init tsp2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-orion5x/ts209-setup.c b/arch/arm/mach-orion5x/ts209-setup.c
index 47162fd..c983161 100644
--- a/arch/arm/mach-orion5x/ts209-setup.c
+++ b/arch/arm/mach-orion5x/ts209-setup.c
@@ -143,7 +143,8 @@ void __init qnap_ts209_pci_preinit(void)
 	}
 }
 
-static int __init qnap_ts209_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init qnap_ts209_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-orion5x/ts409-setup.c b/arch/arm/mach-orion5x/ts409-setup.c
index 5aacc7a..cc33b22 100644
--- a/arch/arm/mach-orion5x/ts409-setup.c
+++ b/arch/arm/mach-orion5x/ts409-setup.c
@@ -121,7 +121,8 @@ static struct platform_device qnap_ts409_nor_flash = {
  * PCI
  ****************************************************************************/
 
-static int __init qnap_ts409_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init qnap_ts409_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-orion5x/wnr854t-setup.c b/arch/arm/mach-orion5x/wnr854t-setup.c
index 444a1c7..2653595 100644
--- a/arch/arm/mach-orion5x/wnr854t-setup.c
+++ b/arch/arm/mach-orion5x/wnr854t-setup.c
@@ -133,7 +133,8 @@ static void __init wnr854t_init(void)
 	platform_device_register(&wnr854t_nor_flash);
 }
 
-static int __init wnr854t_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init wnr854t_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-orion5x/wrt350n-v2-setup.c b/arch/arm/mach-orion5x/wrt350n-v2-setup.c
index d1952be..251ef15 100644
--- a/arch/arm/mach-orion5x/wrt350n-v2-setup.c
+++ b/arch/arm/mach-orion5x/wrt350n-v2-setup.c
@@ -221,7 +221,8 @@ static void __init wrt350n_v2_init(void)
 	platform_device_register(&wrt350n_v2_button_device);
 }
 
-static int __init wrt350n_v2_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init wrt350n_v2_pci_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-pxa/cm-x2xx-pci.c b/arch/arm/mach-pxa/cm-x2xx-pci.c
index 1afc0fb..939a369 100644
--- a/arch/arm/mach-pxa/cm-x2xx-pci.c
+++ b/arch/arm/mach-pxa/cm-x2xx-pci.c
@@ -77,7 +77,7 @@ void cmx2xx_pci_resume(void) {}
 #endif
 
 /* PCI IRQ mapping*/
-static int __init cmx2xx_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init cmx2xx_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/arm/mach-sa1100/pci-nanoengine.c b/arch/arm/mach-sa1100/pci-nanoengine.c
index fba7a91..a3cd2f7 100644
--- a/arch/arm/mach-sa1100/pci-nanoengine.c
+++ b/arch/arm/mach-sa1100/pci-nanoengine.c
@@ -122,7 +122,8 @@ static struct pci_ops pci_nano_ops = {
 	.write	= nanoengine_write_config,
 };
 
-static int __init pci_nanoengine_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init pci_nanoengine_map_irq(const struct pci_dev *dev, u8 slot,
+	u8 pin)
 {
 	return NANOENGINE_IRQ_GPIO_PCI;
 }
diff --git a/arch/arm/mach-shark/pci.c b/arch/arm/mach-shark/pci.c
index 89d175c..e0d1d43 100644
--- a/arch/arm/mach-shark/pci.c
+++ b/arch/arm/mach-shark/pci.c
@@ -13,7 +13,7 @@
 #include <asm/mach/pci.h>
 #include <asm/mach-types.h>
 
-static int __init shark_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init shark_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	if (dev->bus->number == 0)
 		if (dev->devfn == 0)
diff --git a/arch/arm/mach-tegra/pcie.c b/arch/arm/mach-tegra/pcie.c
index 2941212..10639ff 100644
--- a/arch/arm/mach-tegra/pcie.c
+++ b/arch/arm/mach-tegra/pcie.c
@@ -449,7 +449,7 @@ static int tegra_pcie_setup(int nr, struct pci_sys_data *sys)
 	return 1;
 }
 
-static int tegra_pcie_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int tegra_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	return INT_PCIE_INTR;
 }
diff --git a/arch/arm/mach-versatile/pci.c b/arch/arm/mach-versatile/pci.c
index 13c7e5f..70f875c 100644
--- a/arch/arm/mach-versatile/pci.c
+++ b/arch/arm/mach-versatile/pci.c
@@ -325,7 +325,7 @@ void __init pci_versatile_preinit(void)
 /*
  * map the specified device/slot/pin to an IRQ.   Different backplanes may need to modify this.
  */
-static int __init versatile_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init versatile_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 	int devslot = PCI_SLOT(dev->devfn);
diff --git a/arch/sh/drivers/pci/fixups-cayman.c b/arch/sh/drivers/pci/fixups-cayman.c
index b68b61d..edc2fb7 100644
--- a/arch/sh/drivers/pci/fixups-cayman.c
+++ b/arch/sh/drivers/pci/fixups-cayman.c
@@ -5,7 +5,7 @@
 #include <cpu/irq.h>
 #include "pci-sh5.h"
 
-int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int result = -1;
 
diff --git a/arch/sh/drivers/pci/fixups-dreamcast.c b/arch/sh/drivers/pci/fixups-dreamcast.c
index 942ef4f..edeea89 100644
--- a/arch/sh/drivers/pci/fixups-dreamcast.c
+++ b/arch/sh/drivers/pci/fixups-dreamcast.c
@@ -64,7 +64,7 @@ static void __init gapspci_fixup_resources(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, gapspci_fixup_resources);
 
-int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	/*
 	 * The interrupt routing semantics here are quite trivial.
diff --git a/arch/sh/drivers/pci/fixups-landisk.c b/arch/sh/drivers/pci/fixups-landisk.c
index 95c6e2d..ecb1d10 100644
--- a/arch/sh/drivers/pci/fixups-landisk.c
+++ b/arch/sh/drivers/pci/fixups-landisk.c
@@ -19,7 +19,7 @@
 #define PCIMCR_MRSET_OFF	0xBFFFFFFF
 #define PCIMCR_RFSH_OFF		0xFFFFFFFB
 
-int pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
+int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	/*
 	 * slot0: pin1-4 = irq5,6,7,8
diff --git a/arch/sh/drivers/pci/fixups-r7780rp.c b/arch/sh/drivers/pci/fixups-r7780rp.c
index 08b2d86..f9370dc 100644
--- a/arch/sh/drivers/pci/fixups-r7780rp.c
+++ b/arch/sh/drivers/pci/fixups-r7780rp.c
@@ -18,7 +18,7 @@ static char irq_tab[] __initdata = {
 	65, 66, 67, 68,
 };
 
-int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	return irq_tab[slot];
 }
diff --git a/arch/sh/drivers/pci/fixups-rts7751r2d.c b/arch/sh/drivers/pci/fixups-rts7751r2d.c
index e248516..eaddb56 100644
--- a/arch/sh/drivers/pci/fixups-rts7751r2d.c
+++ b/arch/sh/drivers/pci/fixups-rts7751r2d.c
@@ -31,7 +31,7 @@ static char lboxre2_irq_tab[] __initdata = {
 	IRQ_ETH0, IRQ_ETH1, IRQ_INTA, IRQ_INTD,
 };
 
-int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	if (mach_is_lboxre2())
 		return lboxre2_irq_tab[slot];
diff --git a/arch/sh/drivers/pci/fixups-sdk7780.c b/arch/sh/drivers/pci/fixups-sdk7780.c
index 0930f98..0b84725 100644
--- a/arch/sh/drivers/pci/fixups-sdk7780.c
+++ b/arch/sh/drivers/pci/fixups-sdk7780.c
@@ -27,7 +27,7 @@ static char sdk7780_irq_tab[4][16] __initdata = {
 	{ 68, 67, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
 };
 
-int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
        return sdk7780_irq_tab[pin-1][slot];
 }
diff --git a/arch/sh/drivers/pci/fixups-se7751.c b/arch/sh/drivers/pci/fixups-se7751.c
index fd3e6b0..2ec146c 100644
--- a/arch/sh/drivers/pci/fixups-se7751.c
+++ b/arch/sh/drivers/pci/fixups-se7751.c
@@ -6,7 +6,7 @@
 #include <linux/io.h>
 #include "pci-sh4.h"
 
-int __init pcibios_map_platform_irq(struct pci_dev *, u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(const struct pci_dev *, u8 slot, u8 pin)
 {
         switch (slot) {
         case 0: return 13;
diff --git a/arch/sh/drivers/pci/fixups-sh03.c b/arch/sh/drivers/pci/fixups-sh03.c
index 2e8a18b..1615e59 100644
--- a/arch/sh/drivers/pci/fixups-sh03.c
+++ b/arch/sh/drivers/pci/fixups-sh03.c
@@ -3,7 +3,7 @@
 #include <linux/types.h>
 #include <linux/pci.h>
 
-int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq;
 
diff --git a/arch/sh/drivers/pci/fixups-snapgear.c b/arch/sh/drivers/pci/fixups-snapgear.c
index 5a39ecc..4a093c6 100644
--- a/arch/sh/drivers/pci/fixups-snapgear.c
+++ b/arch/sh/drivers/pci/fixups-snapgear.c
@@ -18,7 +18,7 @@
 #include <linux/pci.h>
 #include "pci-sh4.h"
 
-int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	int irq = -1;
 
diff --git a/arch/sh/drivers/pci/fixups-titan.c b/arch/sh/drivers/pci/fixups-titan.c
index 3a79fa8..bd1addb 100644
--- a/arch/sh/drivers/pci/fixups-titan.c
+++ b/arch/sh/drivers/pci/fixups-titan.c
@@ -27,7 +27,7 @@ static char titan_irq_tab[] __initdata = {
 	TITAN_IRQ_USB,
 };
 
-int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
 	int irq = titan_irq_tab[slot];
 
diff --git a/arch/sh/drivers/pci/pcie-sh7786.c b/arch/sh/drivers/pci/pcie-sh7786.c
index 4418f90..4df27c4f 100644
--- a/arch/sh/drivers/pci/pcie-sh7786.c
+++ b/arch/sh/drivers/pci/pcie-sh7786.c
@@ -466,7 +466,7 @@ static int __init pcie_init(struct sh7786_pcie_port *port)
 	return 0;
 }
 
-int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
+int __init pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 {
         return 71;
 }
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index f0efe97..cb21e23 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -112,7 +112,7 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 #endif
 
 /* Board-specific fixup routines. */
-int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin);
+int pcibios_map_platform_irq(const struct pci_dev *dev, u8 slot, u8 pin);
 
 extern void pcibios_resource_to_bus(struct pci_dev *dev,
 	struct pci_bus_region *region, struct resource *res);
diff --git a/arch/sparc/include/asm/leon_pci.h b/arch/sparc/include/asm/leon_pci.h
index 42b4b31..f48527e 100644
--- a/arch/sparc/include/asm/leon_pci.h
+++ b/arch/sparc/include/asm/leon_pci.h
@@ -12,7 +12,7 @@ struct leon_pci_info {
 	struct pci_ops *ops;
 	struct resource	io_space;
 	struct resource	mem_space;
-	int (*map_irq)(struct pci_dev *dev, u8 slot, u8 pin);
+	int (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
 };
 
 extern void leon_pci_init(struct platform_device *ofdev,
diff --git a/arch/sparc/kernel/leon_pci_grpci2.c b/arch/sparc/kernel/leon_pci_grpci2.c
index 44dc093..fad1bd0 100644
--- a/arch/sparc/kernel/leon_pci_grpci2.c
+++ b/arch/sparc/kernel/leon_pci_grpci2.c
@@ -215,7 +215,7 @@ struct grpci2_priv {
 DEFINE_SPINLOCK(grpci2_dev_lock);
 struct grpci2_priv *grpci2priv;
 
-int grpci2_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+int grpci2_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	struct grpci2_priv *priv = dev->bus->sysdata;
 	int irq_group;
diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index 6d4cb5d..2a8014c 100644
--- a/arch/tile/kernel/pci.c
+++ b/arch/tile/kernel/pci.c
@@ -228,7 +228,7 @@ err_cont:
  * (pin - 1) converts from the PCI standard's [1:4] convention to
  * a normal [0:3] range.
  */
-static int tile_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int tile_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	struct pci_controller *controller =
 		(struct pci_controller *)dev->sysdata;
diff --git a/arch/unicore32/kernel/pci.c b/arch/unicore32/kernel/pci.c
index 100eab8..4892fbb 100644
--- a/arch/unicore32/kernel/pci.c
+++ b/arch/unicore32/kernel/pci.c
@@ -102,7 +102,7 @@ void pci_puv3_preinit(void)
 	writel(readl(PCIBRI_CMD) | PCIBRI_CMD_IO | PCIBRI_CMD_MEM, PCIBRI_CMD);
 }
 
-static int __init pci_puv3_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init pci_puv3_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	if (dev->bus->number == 0) {
 #ifdef CONFIG_ARCH_FPGA /* 4 pci slots */
diff --git a/arch/x86/pci/visws.c b/arch/x86/pci/visws.c
index 03008f7..6f2f8ee 100644
--- a/arch/x86/pci/visws.c
+++ b/arch/x86/pci/visws.c
@@ -24,7 +24,7 @@ static void pci_visws_disable_irq(struct pci_dev *dev) { }
 
 unsigned int pci_bus0, pci_bus1;
 
-static int __init visws_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+static int __init visws_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
 	int irq, bus = dev->bus->number;
 
diff --git a/drivers/pci/setup-irq.c b/drivers/pci/setup-irq.c
index eec9738..eb219a1 100644
--- a/drivers/pci/setup-irq.c
+++ b/drivers/pci/setup-irq.c
@@ -21,7 +21,7 @@
 static void __init
 pdev_fixup_irq(struct pci_dev *dev,
 	       u8 (*swizzle)(struct pci_dev *, u8 *),
-	       int (*map_irq)(struct pci_dev *, u8, u8))
+	       int (*map_irq)(const struct pci_dev *, u8, u8))
 {
 	u8 pin, slot;
 	int irq = 0;
@@ -56,7 +56,7 @@ pdev_fixup_irq(struct pci_dev *dev,
 
 void __init
 pci_fixup_irqs(u8 (*swizzle)(struct pci_dev *, u8 *),
-	       int (*map_irq)(struct pci_dev *, u8, u8))
+	       int (*map_irq)(const struct pci_dev *, u8, u8))
 {
 	struct pci_dev *dev = NULL;
 	for_each_pci_dev(dev)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index c446b5c..e37f177 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -879,7 +879,7 @@ void pdev_enable_device(struct pci_dev *);
 void pdev_sort_resources(struct pci_dev *, struct resource_list *);
 int pci_enable_resources(struct pci_dev *, int mask);
 void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
-		    int (*)(struct pci_dev *, u8, u8));
+		    int (*)(const struct pci_dev *, u8, u8));
 #define HAVE_PCI_REQ_REGIONS	2
 int __must_check pci_request_regions(struct pci_dev *, const char *);
 int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
