linux-kernel - [PATCH 2/5] IB/qib: Use kmalloc_array() in qib_init_7322

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Message-ID: <894a5d6c-882c-0bd9-f3ec-80fc8b7c355c@users.sourceforge.net>
Date:   Wed, 5 Apr 2017 15:52:48 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-rdma@...r.kernel.org, Doug Ledford <dledford@...hat.com>,
        Hal Rosenstock <hal.rosenstock@...il.com>,
        Mike Marciniszyn <infinipath@...el.com>,
        Sean Hefty <sean.hefty@...el.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 2/5] IB/qib: Use kmalloc_array() in qib_init_7322_variables()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 5 Apr 2017 09:51:33 +0200

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

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/infiniband/hw/qib/qib_iba7322.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index e4e4e675c89c..490f432809b8 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -6442,12 +6442,15 @@ static int qib_init_7322_variables(struct qib_devdata *dd)
 	sbufcnt = dd->piobcnt2k + dd->piobcnt4k +
 		NUM_VL15_BUFS + BITS_PER_LONG - 1;
 	sbufcnt /= BITS_PER_LONG;
-	dd->cspec->sendchkenable = kmalloc(sbufcnt *
-		sizeof(*dd->cspec->sendchkenable), GFP_KERNEL);
-	dd->cspec->sendgrhchk = kmalloc(sbufcnt *
-		sizeof(*dd->cspec->sendgrhchk), GFP_KERNEL);
-	dd->cspec->sendibchk = kmalloc(sbufcnt *
-		sizeof(*dd->cspec->sendibchk), GFP_KERNEL);
+	dd->cspec->sendchkenable = kmalloc_array(sbufcnt,
+						 sizeof(*dd->cspec->sendchkenable),
+						 GFP_KERNEL);
+	dd->cspec->sendgrhchk = kmalloc_array(sbufcnt,
+					      sizeof(*dd->cspec->sendgrhchk),
+					      GFP_KERNEL);
+	dd->cspec->sendibchk = kmalloc_array(sbufcnt,
+					     sizeof(*dd->cspec->sendibchk),
+					     GFP_KERNEL);
 	if (!dd->cspec->sendchkenable || !dd->cspec->sendgrhchk ||
 		!dd->cspec->sendibchk) {
 		ret = -ENOMEM;
-- 
2.12.2