linux-kernel - [PATCH] s390/cpum_cf: Use kmalloc_array() in merge

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Date:   Sat, 3 Sep 2016 15:27:42 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-s390@...r.kernel.org,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Hendrik Brückner <brueckner@...ux.vnet.ibm.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: [PATCH] s390/cpum_cf: Use kmalloc_array() in merge_attr()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 3 Sep 2016 15:17:45 +0200

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

* 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>
---
 arch/s390/kernel/perf_cpum_cf_events.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/s390/kernel/perf_cpum_cf_events.c b/arch/s390/kernel/perf_cpum_cf_events.c
index 4554a4b..0d6340b 100644
--- a/arch/s390/kernel/perf_cpum_cf_events.c
+++ b/arch/s390/kernel/perf_cpum_cf_events.c
@@ -274,7 +274,7 @@ static __init struct attribute **merge_attr(struct attribute **a,
 		j++;
 	j++;
 
-	new = kmalloc(sizeof(struct attribute *) * j, GFP_KERNEL);
+	new = kmalloc_array(j, sizeof(*new), GFP_KERNEL);
 	if (!new)
 		return NULL;
 	j = 0;
-- 
2.9.3