linux-kernel - [PATCH v2 14/27] mtd: nand: use kzalloc instead of kmalloc and memset

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Message-Id: <20190628024814.15527-1-huangfq.daxian@gmail.com>
Date:   Fri, 28 Jun 2019 10:48:13 +0800
From:   Fuqian Huang <huangfq.daxian@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Fuqian Huang <huangfq.daxian@...il.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Boris Brezillon <bbrezillon@...nel.org>,
        Allison Randal <allison@...utok.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 14/27] mtd: nand: use kzalloc instead of kmalloc and memset

Replace kmalloc followed by a memset with kzalloc.

There is a recommendation to use zeroing allocator
rather than allocator followed by memset with 0 in
./scripts/coccinelle/api/alloc/zalloc-simple.cocci

Signed-off-by: Fuqian Huang <huangfq.daxian@...il.com>
---
 drivers/mtd/nand/raw/nand_bch.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/raw/nand_bch.c b/drivers/mtd/nand/raw/nand_bch.c
index 55aa4c1cd414..17527310c3a1 100644
--- a/drivers/mtd/nand/raw/nand_bch.c
+++ b/drivers/mtd/nand/raw/nand_bch.c
@@ -170,7 +170,7 @@ struct nand_bch_control *nand_bch_init(struct mtd_info *mtd)
 		goto fail;
 	}
 
-	nbc->eccmask = kmalloc(eccbytes, GFP_KERNEL);
+	nbc->eccmask = kzalloc(eccbytes, GFP_KERNEL);
 	nbc->errloc = kmalloc_array(t, sizeof(*nbc->errloc), GFP_KERNEL);
 	if (!nbc->eccmask || !nbc->errloc)
 		goto fail;
@@ -182,7 +182,6 @@ struct nand_bch_control *nand_bch_init(struct mtd_info *mtd)
 		goto fail;
 
 	memset(erased_page, 0xff, eccsize);
-	memset(nbc->eccmask, 0, eccbytes);
 	encode_bch(nbc->bch, erased_page, eccsize, nbc->eccmask);
 	kfree(erased_page);
 
-- 
2.11.0