[PATCH 4/6] PCI/powerpc: Use list_for_each_entry() for bus traversal

[Yijing Wang]

Replace list_for_each() + pci_bus_b() with the simpler
list_for_each_entry().

Signed-off-by: Yijing Wang <wangyij...@huawei.com>
---
 arch/powerpc/kernel/pci_64.c               |    4 +---
 arch/powerpc/platforms/pseries/pci_dlpar.c |    6 +++---
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index a9e311f..2a47790 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -208,7 +208,6 @@ long sys_pciconfig_iobase(long which, unsigned long in_bus,
                          unsigned long in_devfn)
 {
        struct pci_controller* hose;
-       struct list_head *ln;
        struct pci_bus *bus = NULL;
        struct device_node *hose_node;
 
@@ -230,8 +229,7 @@ long sys_pciconfig_iobase(long which, unsigned long in_bus,
         * used on pre-domains setup. We return the first match
         */
 
-       for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) {
-               bus = pci_bus_b(ln);
+       list_for_each_entry(bus, &pci_root_buses, node) {
                if (in_bus >= bus->number && in_bus <= bus->busn_res.end)
                        break;
                bus = NULL;
diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c 
b/arch/powerpc/platforms/pseries/pci_dlpar.c
index efe6137..203cbf0 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -37,15 +37,15 @@ find_bus_among_children(struct pci_bus *bus,
                         struct device_node *dn)
 {
        struct pci_bus *child = NULL;
-       struct list_head *tmp;
+       struct pci_bus *tmp;
        struct device_node *busdn;
 
        busdn = pci_bus_to_OF_node(bus);
        if (busdn == dn)
                return bus;
 
-       list_for_each(tmp, &bus->children) {
-               child = find_bus_among_children(pci_bus_b(tmp), dn);
+       list_for_each_entry(tmp, &bus->children, node) {
+               child = find_bus_among_children(tmp, dn);
                if (child)
                        break;
        };
-- 
1.7.1



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