1 files changed, 8 insertions, 5 deletions

diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index 7e98e778b52f..359ab89748e0 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -112,7 +112,7 @@ static int __init add_legacy_port(struct device_node *np, int want_index,
 static int __init add_legacy_soc_port(struct device_node *np,
                                       struct device_node *soc_dev)
 {
-        phys_addr_t addr;
+        u64 addr;
         u32 *addrp;
         upf_t flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
 
@@ -143,7 +143,7 @@ static int __init add_legacy_isa_port(struct device_node *np,
         u32 *reg;
         char *typep;
         int index = -1;
-        phys_addr_t taddr;
+        u64 taddr;
 
         DBG(" -> add_legacy_isa_port(%s)\n", np->full_name);
 
@@ -165,10 +165,13 @@ static int __init add_legacy_isa_port(struct device_node *np,
         if (typep && *typep == 'S')
                 index = simple_strtol(typep+1, NULL, 0) - 1;
 
-        /* Translate ISA address */
+        /* Translate ISA address. If it fails, we still register the port
+         * with no translated address so that it can be picked up as an IO
+         * port later by the serial driver
+         */
         taddr = of_translate_address(np, reg);
         if (taddr == OF_BAD_ADDR)
-                return -1;
+                taddr = 0;
 
         /* Add port, irq will be dealt with later */
         return add_legacy_port(np, index, UPIO_PORT, reg[1], taddr,
@@ -180,7 +183,7 @@ static int __init add_legacy_isa_port(struct device_node *np,
 static int __init add_legacy_pci_port(struct device_node *np,
                                       struct device_node *pci_dev)
 {
-        phys_addr_t addr, base;
+        u64 addr, base;
         u32 *addrp;
         unsigned int flags;
         int iotype, index = -1, lindex = 0;