[ALPHA] Corrected testing for peer PCI bus root.

From Jay Estabrook <Jay.Estabrook@compaq.com>.

arch/alpha/kernel/core_marvel.c

@@ -524,7 +524,7 @@ mk_conf_addr(struct pci_bus *pbus, unsigned int devfn, int where)
 	if (!io7_port->enabled)
 		return addr;
 
-	if (hose->bus == pbus) {
+	if (!pbus->parent) { /* No parent means peer PCI bus. */
 		/* Don't support idsel > 20 on primary bus.  */
 		if (devfn >= PCI_DEVFN(21, 0))
 			return addr;

arch/alpha/kernel/core_mcpcia.c

@@ -185,7 +185,7 @@ mk_conf_addr(struct pci_bus *pbus, unsigned int devfn, int where,
 	/* Type 1 configuration cycle for *ALL* busses.  */
 	*type1 = 1;
 
-	if (hose->bus == pbus)
+	if (!pbus->parent) /* No parent means peer PCI bus. */
 		bus = 0;
 	addr = (bus << 16) | (devfn << 8) | (where);
 	addr <<= 5; /* swizzle for SPARSE */

arch/alpha/kernel/core_titan.c

@@ -43,7 +43,6 @@ struct
  * BIOS32-style PCI interface:
  */
 
-#define DEBUG_MCHECK 0  /* 0 = minimum, 1 = debug, 2 = dump+dump */
 #define DEBUG_CONFIG 0
 
 #if DEBUG_CONFIG
@@ -123,7 +122,7 @@ mk_conf_addr(struct pci_bus *pbus, unsigned int device_fn, int where,
 		 "pci_addr=0x%p, type1=0x%p)\n",
 		 bus, device_fn, where, pci_addr, type1));
 
-        if (hose->bus == pbus)
+	if (!pbus->parent) /* No parent means peer PCI bus. */
 		bus = 0;
         *type1 = (bus != 0);
 

arch/alpha/kernel/core_tsunami.c

@@ -45,7 +45,6 @@ struct
  * BIOS32-style PCI interface:
  */
 
-#define DEBUG_MCHECK 0		/* 0 = minimal, 1 = debug, 2 = debug+dump.  */
 #define DEBUG_CONFIG 0
 
 #if DEBUG_CONFIG
@@ -101,7 +100,7 @@ mk_conf_addr(struct pci_bus *pbus, unsigned int device_fn, int where,
 		 "pci_addr=0x%p, type1=0x%p)\n",
 		 bus, device_fn, where, pci_addr, type1));
 	
-	if (hose->bus == pbus)
+	if (!pbus->parent) /* No parent means peer PCI bus. */
 		bus = 0;
 	*type1 = (bus != 0);
 

arch/alpha/kernel/core_wildfire.c

@@ -24,7 +24,6 @@
 #include "proto.h"
 #include "pci_impl.h"
 
-#define DEBUG_MCHECK 0		/* 0 = minimal, 1 = debug, 2 = debug+dump.  */
 #define DEBUG_CONFIG 0
 #define DEBUG_DUMP_REGS 0
 #define DEBUG_DUMP_CONFIG 1
@@ -367,7 +366,7 @@ mk_conf_addr(struct pci_bus *pbus, unsigned int device_fn, int where,
 		 "pci_addr=0x%p, type1=0x%p)\n",
 		 bus, device_fn, where, pci_addr, type1));
 
-	if (hose->bus == pbus)
+	if (!pbus->parent) /* No parent means peer PCI bus. */
 		bus = 0;
 	*type1 = (bus != 0);
 

arch/alpha/kernel/sys_dp264.c

@@ -463,7 +463,7 @@ monet_swizzle(struct pci_dev *dev, u8 *pinp)
 	struct pci_controller *hose = dev->sysdata;
 	int slot, pin = *pinp;
 
-	if (hose->bus == dev->bus) {
+	if (!dev->bus->parent) {
 		slot = PCI_SLOT(dev->devfn);
 	}
 	/* Check for the built-in bridge on hose 1. */