linux-kernel - [PATCH 1/6] clk: hisilicon: Use kcalloc() in hisi_clk

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Date:   Tue, 18 Apr 2017 11:37:26 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-clk@...r.kernel.org,
        Jiancheng Xue <xuejiancheng@...ilicon.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 1/6] clk: hisilicon: Use kcalloc() in hisi_clk_init()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 18 Apr 2017 09:25:47 +0200

* A multiplication for the size determination of a memory allocation
  indicated that an array data structure should be processed.
  Thus use the corresponding function "kcalloc".

  This issue was detected by using the Coccinelle software.

* Replace the specification of a data type 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/clk/hisilicon/clk.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/clk/hisilicon/clk.c b/drivers/clk/hisilicon/clk.c
index 9ba2d91f4d3a..9268e80b7566 100644
--- a/drivers/clk/hisilicon/clk.c
+++ b/drivers/clk/hisilicon/clk.c
@@ -85,8 +85,7 @@ struct hisi_clock_data *hisi_clk_init(struct device_node *np,
 		goto err;
 	}
 	clk_data->base = base;
-
-	clk_table = kzalloc(sizeof(struct clk *) * nr_clks, GFP_KERNEL);
+	clk_table = kcalloc(nr_clks, sizeof(*clk_table), GFP_KERNEL);
 	if (!clk_table) {
 		pr_err("%s: could not allocate clock lookup table\n", __func__);
 		goto err_data;
-- 
2.12.2