summaryrefslogtreecommitdiffstats
path: root/arch/powerpc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/prom.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 6f32bebd8a9b..cc9632c7149e 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1432,6 +1432,8 @@ void of_detach_node(const struct device_node *np)
write_lock(&devtree_lock);
parent = np->parent;
+ if (!parent)
+ goto out_unlock;
if (allnodes == np)
allnodes = np->allnext;
@@ -1455,6 +1457,7 @@ void of_detach_node(const struct device_node *np)
prevsib->sibling = np->sibling;
}
+out_unlock:
write_unlock(&devtree_lock);
}