linux-kernel - [PATCH] drm: amd: Use kmemdup instead of duplicating its function

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Message-ID: <1537284932-62278-1-git-send-email-zhongjiang@huawei.com>
Date:   Tue, 18 Sep 2018 23:35:32 +0800
From:   zhong jiang <zhongjiang@...wei.com>
To:     <airlied@...ux.ie>, <alexander.deucher@....com>
CC:     <oded.gabbay@...il.com>, <christian.koenig@....com>,
        <David1.Zhou@....com>, <dri-devel@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] drm: amd: Use kmemdup instead of duplicating its function

kmemdup has implemented the function that kmalloc() + memcpy().
We prefer to kmemdup rather than code opened implementation.

Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
index ee49960..8ddd585 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
@@ -747,12 +747,10 @@ int kfd_create_crat_image_acpi(void **crat_image, size_t *size)
 		return -ENODATA;
 	}
 
-	pcrat_image = kmalloc(crat_table->length, GFP_KERNEL);
+	pcrat_image = kmemdup(crat_table, crat_table->length, GFP_KERNEL);
 	if (!pcrat_image)
 		return -ENOMEM;
 
-	memcpy(pcrat_image, crat_table, crat_table->length);
-
 	*crat_image = pcrat_image;
 	*size = crat_table->length;
 
-- 
1.7.12.4