powerpc: Check "status" property before adding legacy ISA serial ports

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 5 insertions, 3 deletions

diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index 9a4d9fe9ff1c..c9c469f3c5c3 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -386,9 +386,11 @@ void __init find_legacy_serial_ports(void)
                 struct device_node *isa = of_get_parent(np);
                 if (isa && (!strcmp(isa->name, "isa") ||
                             !strcmp(isa->name, "lpc"))) {
-                        index = add_legacy_isa_port(np, isa);
-                        if (index >= 0 && np == stdout)
-                                legacy_serial_console = index;
+                        if (of_device_is_available(np)) {
+                                index = add_legacy_isa_port(np, isa);
+                                if (index >= 0 && np == stdout)
+                                        legacy_serial_console = index;
+                        }
                 }
                 of_node_put(isa);
         }