summaryrefslogtreecommitdiff
path: root/arch/powerpc/kernel/legacy_serial.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/kernel/legacy_serial.c')
-rw-r--r--arch/powerpc/kernel/legacy_serial.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/legacy_serial.c b/arch/powerpc/kernel/legacy_serial.c
index 61dd17449dd..cf37f5ca4b7 100644
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -136,6 +136,11 @@ static int __init add_legacy_soc_port(struct device_node *np,
if (of_get_property(np, "clock-frequency", NULL) == NULL)
return -1;
+ /* if reg-shift or offset, don't try to use it */
+ if ((of_get_property(np, "reg-shift", NULL) != NULL) ||
+ (of_get_property(np, "reg-offset", NULL) != NULL))
+ return -1;
+
/* if rtas uses this device, don't try to use it as well */
if (of_get_property(np, "used-by-rtas", NULL) != NULL)
return -1;