[PATCH] powerpc: Move a dereference below a NULL test
From: zhong jiang
Date: Wed Sep 26 2018 - 07:58:46 EST
It is safe to move dereference below a NULL test.
Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
---
arch/powerpc/kernel/cacheinfo.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel/cacheinfo.c b/arch/powerpc/kernel/cacheinfo.c
index a8f20e5..7f19714 100644
--- a/arch/powerpc/kernel/cacheinfo.c
+++ b/arch/powerpc/kernel/cacheinfo.c
@@ -401,14 +401,13 @@ static struct cache *cache_lookup_or_instantiate(struct device_node *node,
struct cache *cache;
cache = cache_lookup_by_node(node);
+ if (!cache)
+ cache = cache_do_one_devnode(node, level);
WARN_ONCE(cache && cache->level != level,
"cache level mismatch on lookup (got %d, expected %d)\n",
cache->level, level);
- if (!cache)
- cache = cache_do_one_devnode(node, level);
-
return cache;
}
--
1.7.12.4