linux-kernel - [PATCH 2/5] GPU-DRM-nouveau: Use kmalloc_array() in gt215_link

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Message-ID: <6fcf1d5f-73eb-9107-dc1f-be03a5fef271@users.sourceforge.net>
Date:   Wed, 21 Sep 2016 09:25:51 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org,
        Ben Skeggs <bskeggs@...hat.com>,
        David Airlie <airlied@...ux.ie>,
        Martin Peres <martin.peres@...e.fr>,
        Roy Spliet <rspliet@...ipso.eu>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org, trivial@...nel.org,
        Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 2/5] GPU-DRM-nouveau: Use kmalloc_array() in
 gt215_link_train()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 20 Sep 2016 22:32:14 +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 "kmalloc_array".

  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/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c
index d15ea88..dbaf577 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c
@@ -170,7 +170,7 @@ gt215_link_train(struct gt215_ram *ram)
 		return -ENOSYS;
 
 	/* XXX: Multiple partitions? */
-	result = kmalloc(64 * sizeof(u32), GFP_KERNEL);
+	result = kmalloc_array(64, sizeof(*result), GFP_KERNEL);
 	if (!result)
 		return -ENOMEM;
 
-- 
2.10.0