linux-kernel - [PATCH 04/39] debugobjects: drop null test before destroy functions

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Message-Id: <1442146532-9100-5-git-send-email-Julia.Lawall@lip6.fr>
Date:	Sun, 13 Sep 2015 14:14:57 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	linux-kernel@...r.kernel.org
Cc:	sergey.senozhatsky@...il.com, kernel-janitors@...r.kernel.org
Subject: [PATCH 04/39] debugobjects: drop null test before destroy functions

Remove unneeded NULL test.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@ expression x; @@
-if (x != NULL)
  \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 lib/debugobjects.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 547f7f9..7bf529f 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -1089,8 +1089,7 @@ void __init debug_objects_mem_init(void)
 
 	if (!obj_cache || debug_objects_replace_static_objects()) {
 		debug_objects_enabled = 0;
-		if (obj_cache)
-			kmem_cache_destroy(obj_cache);
+		kmem_cache_destroy(obj_cache);
 		pr_warn("out of memory.\n");
 	} else
 		debug_objects_selftest();

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