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 <[email protected]>
Cc: Mike Miller <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: Stephen M. Cameron <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index b0f553b26d0f8d00f86f768f93aad27ebcb0529e..ca83f96756ad86b2a339971050b7378f9a9752d9 100644 (file)
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -5205,7 +5205,6 @@ 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);