[POWERPC] celleb: Fix PCI config space accesses to subordinate buses

Checking whether bus->self is NULL is not enough to know "bus" is the
primary bus.

Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/powerpc/platforms/celleb/scc_epci.c b/arch/powerpc/platforms/celleb/scc_epci.c
index fb23d53eb09c..c4b011094bd6 100644
--- a/arch/powerpc/platforms/celleb/scc_epci.c
+++ b/arch/powerpc/platforms/celleb/scc_epci.c
@@ -133,13 +133,13 @@ static int celleb_epci_check_abort(struct pci_controller *hose,
 }
 
 static volatile void __iomem *celleb_epci_make_config_addr(
+                                        struct pci_bus *bus,
                                         struct pci_controller *hose,
                                         unsigned int devfn, int where)
 {
         volatile void __iomem *addr;
-        struct pci_bus *bus = hose->bus;
 
-        if (bus->self)
+        if (bus != hose->bus)
                 addr = celleb_epci_get_epci_cfg(hose) +
                        (((bus->number & 0xff) << 16)
                         | ((devfn & 0xff) << 8)
@@ -193,7 +193,7 @@ static int celleb_epci_read_config(struct pci_bus *bus,
         } else {
 
                 clear_and_disable_master_abort_interrupt(hose);
-                addr = celleb_epci_make_config_addr(hose, devfn, where);
+                addr = celleb_epci_make_config_addr(bus, hose, devfn, where);
 
                 switch (size) {
                 case 1:
@@ -257,7 +257,7 @@ static int celleb_epci_write_config(struct pci_bus *bus,
         } else {
 
                 clear_and_disable_master_abort_interrupt(hose);
-                addr = celleb_epci_make_config_addr(hose, devfn, where);
+                addr = celleb_epci_make_config_addr(bus, hose, devfn, where);
 
                 switch (size) {
                 case 1: