diff options
| -rw-r--r-- | arch/powerpc/kernel/prom.c | 3 |
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); } |