#if 0 /* test code for epci dummy read */
 static void celleb_epci_dummy_read(struct pci_dev *dev)
 {
-       void *epci_base;
+       void __iomem *epci_base;
        struct device_node *node;
        struct pci_controller *hose;
        u32 val;
        if (!hose)
                return;
 
-       epci_base = (void *)hose->cfg_addr;
+       epci_base = hose->cfg_addr;
 
        val = in_be32(epci_base + SCC_EPCI_WATRP);
        iosync();
                                        struct pci_controller *hose)
 {
        void __iomem *addr;
-       addr = (void *)hose->cfg_addr + PCI_COMMAND;
+       addr = hose->cfg_addr + PCI_COMMAND;
        out_be32(addr, in_be32(addr) | (PCI_STATUS_REC_MASTER_ABORT << 16));
 }
 
 static int celleb_epci_check_abort(struct pci_controller *hose,
-                                  unsigned long addr)
+                                  void __iomem *addr)
 {
        void __iomem *reg, *epci_base;
        u32 val;
 
        iob();
-       epci_base = (void *)hose->cfg_addr;
+       epci_base = hose->cfg_addr;
 
        reg = epci_base + PCI_COMMAND;
        val = in_be32(reg);
        return PCIBIOS_SUCCESSFUL;
 }
 
-static unsigned long celleb_epci_make_config_addr(struct pci_controller *hose,
+static void __iomem *celleb_epci_make_config_addr(struct pci_controller *hose,
                                        unsigned int devfn, int where)
 {
-       unsigned long addr;
+       void __iomem *addr;
        struct pci_bus *bus = hose->bus;
 
        if (bus->self)
-               addr = (unsigned long)hose->cfg_data +
+               addr = hose->cfg_data +
                       (((bus->number & 0xff) << 16)
                        | ((devfn & 0xff) << 8)
                        | (where & 0xff)
                        | 0x01000000);
        else
-               addr = (unsigned long)hose->cfg_data +
+               addr = hose->cfg_data +
                       (((devfn & 0xff) << 8) | (where & 0xff));
 
-       pr_debug("EPCI: config_addr = 0x%016lx\n", addr);
+       pr_debug("EPCI: config_addr = 0x%p\n", addr);
 
        return addr;
 }
 static int celleb_epci_read_config(struct pci_bus *bus,
                        unsigned int devfn, int where, int size, u32 * val)
 {
-       unsigned long addr;
+       void __iomem *addr;
        struct device_node *node;
        struct pci_controller *hose;
 
        if (bus->number == hose->first_busno && devfn == 0) {
                /* EPCI controller self */
 
-               addr = (unsigned long)hose->cfg_addr + where;
+               addr = hose->cfg_addr + where;
 
                switch (size) {
                case 1:
-                       *val = in_8((u8 *)addr);
+                       *val = in_8(addr);
                        break;
                case 2:
-                       *val = in_be16((u16 *)addr);
+                       *val = in_be16(addr);
                        break;
                case 4:
-                       *val = in_be32((u32 *)addr);
+                       *val = in_be32(addr);
                        break;
                default:
                        return PCIBIOS_DEVICE_NOT_FOUND;
 
                switch (size) {
                case 1:
-                       *val = in_8((u8 *)addr);
+                       *val = in_8(addr);
                        break;
                case 2:
-                       *val = in_le16((u16 *)addr);
+                       *val = in_le16(addr);
                        break;
                case 4:
-                       *val = in_le32((u32 *)addr);
+                       *val = in_le32(addr);
                        break;
                default:
                        return PCIBIOS_DEVICE_NOT_FOUND;
                 "addr=0x%lx, devfn=0x%x, where=0x%x, size=0x%x, val=0x%x\n",
                 addr, devfn, where, size, *val);
 
-       return celleb_epci_check_abort(hose, 0);
+       return celleb_epci_check_abort(hose, NULL);
 }
 
 static int celleb_epci_write_config(struct pci_bus *bus,
                        unsigned int devfn, int where, int size, u32 val)
 {
-       unsigned long addr;
+       void __iomem *addr;
        struct device_node *node;
        struct pci_controller *hose;
 
        if (bus->number == hose->first_busno && devfn == 0) {
                /* EPCI controller self */
 
-               addr = (unsigned long)hose->cfg_addr + where;
+               addr = hose->cfg_addr + where;
 
                switch (size) {
                case 1:
-                       out_8((u8 *)addr, val);
+                       out_8(addr, val);
                        break;
                case 2:
-                       out_be16((u16 *)addr, val);
+                       out_be16(addr, val);
                        break;
                case 4:
-                       out_be32((u32 *)addr, val);
+                       out_be32(addr, val);
                        break;
                default:
                        return PCIBIOS_DEVICE_NOT_FOUND;
 
                switch (size) {
                case 1:
-                       out_8((u8 *)addr, val);
+                       out_8(addr, val);
                        break;
                case 2:
-                       out_le16((u16 *)addr, val);
+                       out_le16(addr, val);
                        break;
                case 4:
-                       out_le32((u32 *)addr, val);
+                       out_le32(addr, val);
                        break;
                default:
                        return PCIBIOS_DEVICE_NOT_FOUND;
        void __iomem *reg, *epci_base;
        int hwres = 0;
 
-       epci_base = (void *)hose->cfg_addr;
+       epci_base = hose->cfg_addr;
 
        /* PCI core reset(Internal bus and PCI clock) */
        reg = epci_base + SCC_EPCI_CKCTRL;