ARM: PCI: provide a default bus scan implementation

Most PCI implementations perform simple root bus scanning.  Rather than
having each group of platforms provide a duplicated bus scan function,
provide the PCI configuration ops structure via the hw_pci structure,
and call the root bus scanning function from core ARM PCI code.

Acked-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

6 files changed, 6 insertions, 19 deletions

diff --git a/arch/arm/mach-ixp2000/enp2611.c b/arch/arm/mach-ixp2000/enp2611.c
index 4867f408617c..73df2f688813 100644
--- a/arch/arm/mach-ixp2000/enp2611.c
+++ b/arch/arm/mach-ixp2000/enp2611.c
@@ -141,13 +141,6 @@ static struct pci_ops enp2611_pci_ops = {
 	.write  = enp2611_pci_write_config
 };
 
-static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
-						struct pci_sys_data *sys)
-{
-	return pci_scan_root_bus(NULL, sys->busnr, &enp2611_pci_ops, sys,
-				 &sys->resources);
-}
-
 static int __init enp2611_pci_map_irq(const struct pci_dev *dev, u8 slot,
 	u8 pin)
 {
@@ -180,9 +173,9 @@ static int __init enp2611_pci_map_irq(const struct pci_dev *dev, u8 slot,
 
 struct hw_pci enp2611_pci __initdata = {
 	.nr_controllers	= 1,
+	.ops		= &enp2611_pci_ops,
 	.setup		= enp2611_pci_setup,
 	.preinit	= enp2611_pci_preinit,
-	.scan		= enp2611_pci_scan_bus,
 	.map_irq	= enp2611_pci_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp2000/include/mach/platform.h b/arch/arm/mach-ixp2000/include/mach/platform.h
index bb0f8dcf9ee1..6b500c0858be 100644
--- a/arch/arm/mach-ixp2000/include/mach/platform.h
+++ b/arch/arm/mach-ixp2000/include/mach/platform.h
@@ -127,10 +127,10 @@ unsigned long ixp2000_gettimeoffset(void);
 
 struct pci_sys_data;
 
+extern struct pci_ops ixp2000_pci_ops;
 u32 *ixp2000_pci_config_addr(unsigned int bus, unsigned int devfn, int where);
 void ixp2000_pci_preinit(void);
 int ixp2000_pci_setup(int, struct pci_sys_data*);
-struct pci_bus* ixp2000_pci_scan_bus(int, struct pci_sys_data*);
 int ixp2000_pci_read_config(struct pci_bus*, unsigned int, int, int, u32 *);
 int ixp2000_pci_write_config(struct pci_bus*, unsigned int, int, int, u32);
 
diff --git a/arch/arm/mach-ixp2000/ixdp2400.c b/arch/arm/mach-ixp2000/ixdp2400.c
index 915ad49e3b8f..4ec44801d303 100644
--- a/arch/arm/mach-ixp2000/ixdp2400.c
+++ b/arch/arm/mach-ixp2000/ixdp2400.c
@@ -146,10 +146,10 @@ static void ixdp2400_pci_postinit(void)
 
 static struct hw_pci ixdp2400_pci __initdata = {
 	.nr_controllers	= 1,
+	.ops		= &ixp2000_pci_ops,
 	.setup		= ixdp2400_pci_setup,
 	.preinit	= ixdp2400_pci_preinit,
 	.postinit	= ixdp2400_pci_postinit,
-	.scan		= ixp2000_pci_scan_bus,
 	.map_irq	= ixdp2400_pci_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp2000/ixdp2800.c b/arch/arm/mach-ixp2000/ixdp2800.c
index a9f1819ea049..44378c31d177 100644
--- a/arch/arm/mach-ixp2000/ixdp2800.c
+++ b/arch/arm/mach-ixp2000/ixdp2800.c
@@ -246,10 +246,10 @@ static void __init ixdp2800_pci_postinit(void)
 
 struct __initdata hw_pci ixdp2800_pci __initdata = {
 	.nr_controllers	= 1,
+	.ops		= &ixp2000_pci_ops,
 	.setup		= ixdp2800_pci_setup,
 	.preinit	= ixdp2800_pci_preinit,
 	.postinit	= ixdp2800_pci_postinit,
-	.scan		= ixp2000_pci_scan_bus,
 	.map_irq	= ixdp2800_pci_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp2000/ixdp2x01.c b/arch/arm/mach-ixp2000/ixdp2x01.c
index 5196c39cdba4..af8b801d7d59 100644
--- a/arch/arm/mach-ixp2000/ixdp2x01.c
+++ b/arch/arm/mach-ixp2000/ixdp2x01.c
@@ -327,9 +327,9 @@ static int ixdp2x01_pci_setup(int nr, struct pci_sys_data *sys)
 
 struct hw_pci ixdp2x01_pci __initdata = {
 	.nr_controllers	= 1,
+	.ops		= &ixp2000_pci_ops,
 	.setup		= ixdp2x01_pci_setup,
 	.preinit	= ixdp2x01_pci_preinit,
-	.scan		= ixp2000_pci_scan_bus,
 	.map_irq	= ixdp2x01_pci_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp2000/pci.c b/arch/arm/mach-ixp2000/pci.c
index 9c02de932fac..d706838db023 100644
--- a/arch/arm/mach-ixp2000/pci.c
+++ b/arch/arm/mach-ixp2000/pci.c
@@ -124,17 +124,11 @@ int ixp2000_pci_write_config(struct pci_bus *bus, unsigned int devfn, int where,
 }
 
 
-static struct pci_ops ixp2000_pci_ops = {
+struct pci_ops ixp2000_pci_ops = {
 	.read	= ixp2000_pci_read_config,
 	.write	= ixp2000_pci_write_config
 };
 
-struct pci_bus *ixp2000_pci_scan_bus(int nr, struct pci_sys_data *sysdata)
-{
-	return pci_scan_root_bus(NULL, sysdata->busnr, &ixp2000_pci_ops,
-				 sysdata, &sysdata->resources);
-}
-
 
 int ixp2000_pci_abort_handler(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 {