linux-kernel - [PATCH] fs crypto: fix ifnullfree.cocci warnings

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Date:	Wed, 17 Feb 2016 08:32:56 -0500 (EST)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Jaegeuk Kim <jaegeuk@...nel.org>
cc:	kbuild-all@...org, Theodore Ts'o <tytso@....edu>,
	Michael Halcrow <mhalcrow@...gle.com>,
	Ildar Muslukhov <ildarm@...gle.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] fs crypto: fix ifnullfree.cocci warnings

 NULL check before some freeing functions is not needed.

Generated by: scripts/coccinelle/free/ifnullfree.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
Signed-off-by: Julia Lawall <julia.lawall@...6.fr>

---

 crypto.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

--- a/fs/crypto/crypto.c
+++ b/fs/crypto/crypto.c
@@ -414,8 +414,7 @@ static void fscrypt_destroy(void)
 	list_for_each_entry_safe(pos, n, &fscrypt_free_ctxs, free_list)
 		kmem_cache_free(fscrypt_ctx_cachep, pos);
 	INIT_LIST_HEAD(&fscrypt_free_ctxs);
-	if (fscrypt_bounce_page_pool)
-		mempool_destroy(fscrypt_bounce_page_pool);
+	mempool_destroy(fscrypt_bounce_page_pool);
 	fscrypt_bounce_page_pool = NULL;
 }

@@ -500,9 +499,7 @@ void __exit fscrypt_exit(void)

 	if (fscrypt_read_workqueue)
 		destroy_workqueue(fscrypt_read_workqueue);
-	if (fscrypt_ctx_cachep)
-		kmem_cache_destroy(fscrypt_ctx_cachep);
-	if (fscrypt_info_cachep)
-		kmem_cache_destroy(fscrypt_info_cachep);
+	kmem_cache_destroy(fscrypt_ctx_cachep);
+	kmem_cache_destroy(fscrypt_info_cachep);
 }
 module_exit(fscrypt_exit);