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>

16 files changed, 15 insertions, 21 deletions

diff --git a/arch/arm/mach-ixp4xx/avila-pci.c b/arch/arm/mach-ixp4xx/avila-pci.c
index 89d1f35..548c7d4 100644
--- a/arch/arm/mach-ixp4xx/avila-pci.c
+++ b/arch/arm/mach-ixp4xx/avila-pci.c
@@ -65,9 +65,9 @@ static int __init avila_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci avila_pci __initdata = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit	= avila_pci_preinit,
 	.setup		= ixp4xx_setup,
-	.scan		= ixp4xx_scan_bus,
 	.map_irq	= avila_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/common-pci.c b/arch/arm/mach-ixp4xx/common-pci.c
index d5719eb..1694f01 100644
--- a/arch/arm/mach-ixp4xx/common-pci.c
+++ b/arch/arm/mach-ixp4xx/common-pci.c
@@ -480,12 +480,6 @@ int ixp4xx_setup(int nr, struct pci_sys_data *sys)
 	return 1;
 }
 
-struct pci_bus * __devinit ixp4xx_scan_bus(int nr, struct pci_sys_data *sys)
-{
-	return pci_scan_root_bus(NULL, sys->busnr, &ixp4xx_ops, sys,
-				 &sys->resources);
-}
-
 int dma_set_coherent_mask(struct device *dev, u64 mask)
 {
 	if (mask >= SZ_64M - 1)
diff --git a/arch/arm/mach-ixp4xx/coyote-pci.c b/arch/arm/mach-ixp4xx/coyote-pci.c
index d876a4f..5d14ce2 100644
--- a/arch/arm/mach-ixp4xx/coyote-pci.c
+++ b/arch/arm/mach-ixp4xx/coyote-pci.c
@@ -48,9 +48,9 @@ static int __init coyote_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci coyote_pci __initdata = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit =        coyote_pci_preinit,
 	.setup =          ixp4xx_setup,
-	.scan =           ixp4xx_scan_bus,
 	.map_irq =        coyote_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/dsmg600-pci.c b/arch/arm/mach-ixp4xx/dsmg600-pci.c
index 6648597..8dca769 100644
--- a/arch/arm/mach-ixp4xx/dsmg600-pci.c
+++ b/arch/arm/mach-ixp4xx/dsmg600-pci.c
@@ -62,9 +62,9 @@ static int __init dsmg600_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci __initdata dsmg600_pci = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit	= dsmg600_pci_preinit,
 	.setup		= ixp4xx_setup,
-	.scan		= ixp4xx_scan_bus,
 	.map_irq	= dsmg600_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/fsg-pci.c b/arch/arm/mach-ixp4xx/fsg-pci.c
index 528e4af..fd4a862 100644
--- a/arch/arm/mach-ixp4xx/fsg-pci.c
+++ b/arch/arm/mach-ixp4xx/fsg-pci.c
@@ -59,9 +59,9 @@ static int __init fsg_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci fsg_pci __initdata = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit =	  fsg_pci_preinit,
 	.setup =	  ixp4xx_setup,
-	.scan =		  ixp4xx_scan_bus,
 	.map_irq =	  fsg_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/gateway7001-pci.c b/arch/arm/mach-ixp4xx/gateway7001-pci.c
index 1d1134b..d9d6cc0 100644
--- a/arch/arm/mach-ixp4xx/gateway7001-pci.c
+++ b/arch/arm/mach-ixp4xx/gateway7001-pci.c
@@ -47,9 +47,9 @@ static int __init gateway7001_map_irq(const struct pci_dev *dev, u8 slot,
 
 struct hw_pci gateway7001_pci __initdata = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit =        gateway7001_pci_preinit,
 	.setup =          ixp4xx_setup,
-	.scan =           ixp4xx_scan_bus,
 	.map_irq =        gateway7001_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/goramo_mlr.c b/arch/arm/mach-ixp4xx/goramo_mlr.c
index c97a1a8..b800a03 100644
--- a/arch/arm/mach-ixp4xx/goramo_mlr.c
+++ b/arch/arm/mach-ixp4xx/goramo_mlr.c
@@ -473,10 +473,10 @@ static int __init gmlr_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 static struct hw_pci gmlr_hw_pci __initdata = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit	= gmlr_pci_preinit,
 	.postinit	= gmlr_pci_postinit,
 	.setup		= ixp4xx_setup,
-	.scan		= ixp4xx_scan_bus,
 	.map_irq	= gmlr_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/gtwx5715-pci.c b/arch/arm/mach-ixp4xx/gtwx5715-pci.c
index 4bd8770..551d114 100644
--- a/arch/arm/mach-ixp4xx/gtwx5715-pci.c
+++ b/arch/arm/mach-ixp4xx/gtwx5715-pci.c
@@ -67,9 +67,9 @@ static int __init gtwx5715_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci gtwx5715_pci __initdata = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit =        gtwx5715_pci_preinit,
 	.setup =          ixp4xx_setup,
-	.scan =           ixp4xx_scan_bus,
 	.map_irq =        gtwx5715_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/include/mach/platform.h b/arch/arm/mach-ixp4xx/include/mach/platform.h
index b66bedc..5bce94a 100644
--- a/arch/arm/mach-ixp4xx/include/mach/platform.h
+++ b/arch/arm/mach-ixp4xx/include/mach/platform.h
@@ -130,7 +130,7 @@ extern void ixp4xx_restart(char, const char *);
 extern void ixp4xx_pci_preinit(void);
 struct pci_sys_data;
 extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
-extern struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys);
+extern struct pci_ops ixp4xx_ops;
 
 /*
  * GPIO-functions
diff --git a/arch/arm/mach-ixp4xx/ixdp425-pci.c b/arch/arm/mach-ixp4xx/ixdp425-pci.c
index 3e1a229..318424d 100644
--- a/arch/arm/mach-ixp4xx/ixdp425-pci.c
+++ b/arch/arm/mach-ixp4xx/ixdp425-pci.c
@@ -60,9 +60,9 @@ static int __init ixdp425_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci ixdp425_pci __initdata = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit	= ixdp425_pci_preinit,
 	.setup		= ixp4xx_setup,
-	.scan		= ixp4xx_scan_bus,
 	.map_irq	= ixdp425_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/ixdpg425-pci.c b/arch/arm/mach-ixp4xx/ixdpg425-pci.c
index 5c70e92..1f8717b 100644
--- a/arch/arm/mach-ixp4xx/ixdpg425-pci.c
+++ b/arch/arm/mach-ixp4xx/ixdpg425-pci.c
@@ -42,9 +42,9 @@ static int __init ixdpg425_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci ixdpg425_pci __initdata = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit =        ixdpg425_pci_preinit,
 	.setup =          ixp4xx_setup,
-	.scan =           ixp4xx_scan_bus,
 	.map_irq =        ixdpg425_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/miccpt-pci.c b/arch/arm/mach-ixp4xx/miccpt-pci.c
index 8d4ba71..d114ccd 100644
--- a/arch/arm/mach-ixp4xx/miccpt-pci.c
+++ b/arch/arm/mach-ixp4xx/miccpt-pci.c
@@ -61,9 +61,9 @@ static int __init miccpt_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci miccpt_pci __initdata = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit	= miccpt_pci_preinit,
 	.setup		= ixp4xx_setup,
-	.scan		= ixp4xx_scan_bus,
 	.map_irq	= miccpt_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/nas100d-pci.c b/arch/arm/mach-ixp4xx/nas100d-pci.c
index ba1ad20..8f0eba0 100644
--- a/arch/arm/mach-ixp4xx/nas100d-pci.c
+++ b/arch/arm/mach-ixp4xx/nas100d-pci.c
@@ -58,9 +58,9 @@ static int __init nas100d_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci __initdata nas100d_pci = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit	= nas100d_pci_preinit,
 	.setup		= ixp4xx_setup,
-	.scan		= ixp4xx_scan_bus,
 	.map_irq	= nas100d_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/nslu2-pci.c b/arch/arm/mach-ixp4xx/nslu2-pci.c
index ffc060f..032defe 100644
--- a/arch/arm/mach-ixp4xx/nslu2-pci.c
+++ b/arch/arm/mach-ixp4xx/nslu2-pci.c
@@ -54,9 +54,9 @@ static int __init nslu2_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci __initdata nslu2_pci = {
 	.nr_controllers = 1,
+	.ops		= &ixp4xx_ops,
 	.preinit	= nslu2_pci_preinit,
 	.setup		= ixp4xx_setup,
-	.scan		= ixp4xx_scan_bus,
 	.map_irq	= nslu2_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/vulcan-pci.c b/arch/arm/mach-ixp4xx/vulcan-pci.c
index b9b1c42..a4220fa 100644
--- a/arch/arm/mach-ixp4xx/vulcan-pci.c
+++ b/arch/arm/mach-ixp4xx/vulcan-pci.c
@@ -56,9 +56,9 @@ static int __init vulcan_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci vulcan_pci __initdata = {
 	.nr_controllers	= 1,
+	.ops		= &ixp4xx_ops,
 	.preinit	= vulcan_pci_preinit,
 	.setup		= ixp4xx_setup,
-	.scan		= ixp4xx_scan_bus,
 	.map_irq	= vulcan_map_irq,
 };
 
diff --git a/arch/arm/mach-ixp4xx/wg302v2-pci.c b/arch/arm/mach-ixp4xx/wg302v2-pci.c
index f39a242..c92e5b8 100644
--- a/arch/arm/mach-ixp4xx/wg302v2-pci.c
+++ b/arch/arm/mach-ixp4xx/wg302v2-pci.c
@@ -46,9 +46,9 @@ static int __init wg302v2_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 
 struct hw_pci wg302v2_pci __initdata = {
 	.nr_controllers = 1,
+	.ops = &ixp4xx_ops,
 	.preinit =        wg302v2_pci_preinit,
 	.setup =          ixp4xx_setup,
-	.scan =           ixp4xx_scan_bus,
 	.map_irq =        wg302v2_map_irq,
 };