powerpc: Check device status before adding serial device

serial port nodes with the property status="disabled" are not usable and so
avoid adding "disabled" port with the system.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index c834757..2b97b80 100644 (file)
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -330,9 +330,11 @@ void __init find_legacy_serial_ports(void)
                if (!parent)
                        continue;
                if (of_match_node(legacy_serial_parents, parent) != NULL) {
-                       index = add_legacy_soc_port(np, np);
-                       if (index >= 0 && np == stdout)
-                               legacy_serial_console = index;
+                       if (of_device_is_available(np)) {
+                               index = add_legacy_soc_port(np, np);
+                               if (index >= 0 && np == stdout)
+                                       legacy_serial_console = index;
+                       }
                }
                of_node_put(parent);
        }