linux-kernel - [PATCH 7/8] mmc-core: Use kcalloc() in mmc_test_alloc

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Date:   Sun, 8 Jan 2017 22:50:25 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-mmc@...r.kernel.org, Adrian Hunter <adrian.hunter@...el.com>,
        Harjani Ritesh <riteshh@...eaurora.org>,
        Jens Axboe <axboe@...com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mike Christie <mchristi@...hat.com>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 7/8] mmc-core: Use kcalloc() in mmc_test_alloc_mem()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 8 Jan 2017 21:43:12 +0100

* The script "checkpatch.pl" pointed information out like the following.

  WARNING: Prefer kcalloc over kzalloc with multiply

  Thus fix the affected source code place.

* Replace the specification of a data structure by a pointer dereference
  to make the corresponding size determination a bit safer according to
  the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/mmc/core/mmc_test.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/mmc/core/mmc_test.c b/drivers/mmc/core/mmc_test.c
index 294d3c675734..cb4750de2720 100644
--- a/drivers/mmc/core/mmc_test.c
+++ b/drivers/mmc/core/mmc_test.c
@@ -360,8 +360,7 @@ static struct mmc_test_mem *mmc_test_alloc_mem(unsigned long min_sz,
 	if (!mem)
 		return NULL;
 
-	mem->arr = kzalloc(sizeof(struct mmc_test_pages) * max_segs,
-			   GFP_KERNEL);
+	mem->arr = kcalloc(max_segs, sizeof(*mem->arr), GFP_KERNEL);
 	if (!mem->arr)
 		goto out_free;
 
-- 
2.11.0