linux-kernel - [PATCH 08/39] pktcdvd: drop null test before destroy functions

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Message-Id: <1442146532-9100-9-git-send-email-Julia.Lawall@lip6.fr>
Date:	Sun, 13 Sep 2015 14:15:01 +0200
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Jiri Kosina <jikos@...nel.org>
Cc:	sergey.senozhatsky@...il.com, kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 08/39] pktcdvd: 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>

---
 drivers/block/pktcdvd.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 7be2375..cd813f9 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2803,8 +2803,7 @@ out_new_dev:
 out_mem2:
 	put_disk(disk);
 out_mem:
-	if (pd->rb_pool)
-		mempool_destroy(pd->rb_pool);
+	mempool_destroy(pd->rb_pool);
 	kfree(pd);
 out_mutex:
 	mutex_unlock(&ctl_mutex);

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