From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Date: Fri, 7 Sep 2012 00:17:58 +0000 (+1000)
Subject: cciss: remove unneeded memset()
X-Git-Tag: next-20120907~1^2~199
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bfd663744cb0acbf0345025f45968ef6fa9d623c;p=karo-tx-linux.git

cciss: remove unneeded memset()

The memory return by kzalloc() or kmem_cache_zalloc() has already be set
to zero, so remove useless memset(0).

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: Mike Miller <mike.miller@hp.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index e04c63ec7759..6526157edafc 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -5198,7 +5198,6 @@ static void cciss_shutdown(struct pci_dev *pdev)
 		return;
 	}
 	/* write all data in the battery backed cache to disk */
-	memset(flush_buf, 0, 4);
 	return_code = sendcmd_withirq(h, CCISS_CACHE_FLUSH, flush_buf,
 		4, 0, CTLR_LUNID, TYPE_CMD);
 	kfree(flush_buf);