linux-kernel - [PATCH 1/5] drm/amdgpu: Use kmalloc_array() in amdgpu_debugfs_gca_config

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Message-ID: <976bba66-8e9b-d5ee-a266-d291986e63d7@users.sourceforge.net>
Date:   Sun, 18 Sep 2016 18:50:08 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     dri-devel@...ts.freedesktop.org,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        Chunming Zhou <David1.Zhou@....com>,
        David Airlie <airlied@...ux.ie>, Monk Liu <Monk.Liu@....com>,
        Tom St Denis <tom.stdenis@....com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/5] drm/amdgpu: Use kmalloc_array() in
 amdgpu_debugfs_gca_config_read()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 18 Sep 2016 17:00:52 +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.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index df7ab245..2709ebd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2438,7 +2438,7 @@ static ssize_t amdgpu_debugfs_gca_config_read(struct file *f, char __user *buf,
 	if (size & 0x3 || *pos & 0x3)
 		return -EINVAL;
 
-	config = kmalloc(256 * sizeof(*config), GFP_KERNEL);
+	config = kmalloc_array(256, sizeof(*config), GFP_KERNEL);
 	if (!config)
 		return -ENOMEM;
 
-- 
2.10.0