[POWERPC] Remove hack to determine the 2nd PHBs bus number

Now that we have the pci_controller in the exclude function we can easy
figure out if the bus number is the PHB or not.  The old style of using a
variable setup at init time was actually broken and would only work in
specific cases.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/platforms/83xx/pci.c

@@ -33,14 +33,9 @@
 #define DBG(x...)
 #endif
 
-int mpc83xx_pci2_busno;
-
 int mpc83xx_exclude_device(struct pci_controller *hose, u_char bus, u_char devfn)
 {
-	if (bus == 0 && PCI_SLOT(devfn) == 0)
-		return PCIBIOS_DEVICE_NOT_FOUND;
-	if (mpc83xx_pci2_busno)
-		if (bus == (mpc83xx_pci2_busno) && PCI_SLOT(devfn) == 0)
+	if ((bus == hose->first_busno) && PCI_SLOT(devfn) == 0)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	return PCIBIOS_SUCCESSFUL;
 }
@@ -86,7 +81,6 @@ int __init mpc83xx_add_bridge(struct device_node *dev)
 		setup_indirect_pci(hose, immr + 0x8380, immr + 0x8384);
 		primary = 0;
 		hose->bus_offset = hose->first_busno;
-		mpc83xx_pci2_busno = hose->first_busno;
 	}
 
 	printk(KERN_INFO "Found MPC83xx PCI host bridge at 0x%016llx. "

arch/powerpc/platforms/85xx/mpc85xx_cds.c

@@ -55,15 +55,10 @@ static volatile u8 *cadmus;
 #define ARCADIA_HOST_BRIDGE_IDSEL	17
 #define ARCADIA_2ND_BRIDGE_IDSEL	3
 
-extern int mpc85xx_pci2_busno;
-
 static int mpc85xx_exclude_device(struct pci_controller *hose,
 				  u_char bus, u_char devfn)
 {
-	if (bus == 0 && PCI_SLOT(devfn) == 0)
-		return PCIBIOS_DEVICE_NOT_FOUND;
-	if (mpc85xx_pci2_busno)
-		if (bus == (mpc85xx_pci2_busno) && PCI_SLOT(devfn) == 0)
+	if ((bus == hose->first_busno) && PCI_SLOT(devfn) == 0)
 		return PCIBIOS_DEVICE_NOT_FOUND;
 	/* We explicitly do not go past the Tundra 320 Bridge */
 	if ((bus == 1) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL))

arch/powerpc/platforms/85xx/pci.c

@@ -33,8 +33,6 @@
 #define DBG(x...)
 #endif
 
-int mpc85xx_pci2_busno = 0;
-
 #ifdef CONFIG_PCI
 int __init mpc85xx_add_bridge(struct device_node *dev)
 {
@@ -74,7 +72,6 @@ int __init mpc85xx_add_bridge(struct device_node *dev)
 		setup_indirect_pci(hose, immr + 0x9000, immr + 0x9004);
 		primary = 0;
 		hose->bus_offset = hose->first_busno;
-		mpc85xx_pci2_busno = hose->first_busno;
 	}
 
 	printk(KERN_INFO "Found MPC85xx PCI host bridge at 0x%016llx. "