1 files changed, 15 insertions, 12 deletions

diff --git a/arch/powerpc/kernel/io-workarounds.c b/arch/powerpc/kernel/io-workarounds.c
index 7e5845798788..d36515eaa314 100644
--- a/arch/powerpc/kernel/io-workarounds.c
+++ b/arch/powerpc/kernel/io-workarounds.c
@@ -144,7 +144,19 @@ static void __iomem *iowa_ioremap(phys_addr_t addr, unsigned long size,
         return res;
 }
 
-/* Regist new bus to support workaround */
+/* Enable IO workaround */
+static void __devinit io_workaround_init(void)
+{
+        static int io_workaround_inited;
+
+        if (io_workaround_inited)
+                return;
+        ppc_pci_io = iowa_pci_io;
+        ppc_md.ioremap = iowa_ioremap;
+        io_workaround_inited = 1;
+}
+
+/* Register new bus to support workaround */
 void __devinit iowa_register_bus(struct pci_controller *phb,
                         struct ppc_pci_io *ops,
                         int (*initfunc)(struct iowa_bus *, void *), void *data)
@@ -152,6 +164,8 @@ void __devinit iowa_register_bus(struct pci_controller *phb,
         struct iowa_bus *bus;
         struct device_node *np = phb->dn;
 
+        io_workaround_init();
+
         if (iowa_bus_count >= IOWA_MAX_BUS) {
                 pr_err("IOWA:Too many pci bridges, "
                        "workarounds disabled for %s\n", np->full_name);
@@ -171,14 +185,3 @@ void __devinit iowa_register_bus(struct pci_controller *phb,
         pr_debug("IOWA:[%d]Add bus, %s.\n", iowa_bus_count-1, np->full_name);
 }
 
-/* enable IO workaround */
-void __devinit io_workaround_init(void)
-{
-        static int io_workaround_inited;
-
-        if (io_workaround_inited)
-                return;
-        ppc_pci_io = iowa_pci_io;
-        ppc_md.ioremap = iowa_ioremap;
-        io_workaround_inited = 1;
-}