linux-kernel - [PATCH 3/3] sata_mv: Use devm_kcalloc() in mv_platform

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Date:   Tue, 18 Apr 2017 22:03:51 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-ide@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>,
        Tejun Heo <tj@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 3/3] sata_mv: Use devm_kcalloc() in mv_platform_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 18 Apr 2017 21:36:43 +0200

* Multiplications for the size determination of memory allocations
  indicated that array data structures should be processed.
  Thus use the corresponding function "devm_kcalloc".

  This issue was detected by using the Coccinelle software.

* Replace the specification of data types by pointer dereferences
  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/ata/sata_mv.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index b66bcda88320..49abe386c7f6 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -4118,13 +4118,15 @@ static int mv_platform_probe(struct platform_device *pdev)
 
 	if (!host || !hpriv)
 		return -ENOMEM;
-	hpriv->port_clks = devm_kzalloc(&pdev->dev,
-					sizeof(struct clk *) * n_ports,
+	hpriv->port_clks = devm_kcalloc(&pdev->dev,
+					n_ports,
+					sizeof(*hpriv->port_clks),
 					GFP_KERNEL);
 	if (!hpriv->port_clks)
 		return -ENOMEM;
-	hpriv->port_phys = devm_kzalloc(&pdev->dev,
-					sizeof(struct phy *) * n_ports,
+	hpriv->port_phys = devm_kcalloc(&pdev->dev,
+					n_ports,
+					sizeof(*hpriv->port_phys),
 					GFP_KERNEL);
 	if (!hpriv->port_phys)
 		return -ENOMEM;
-- 
2.12.2