linux-kernel - [PATCH] amdgpu/uvd: use kmemdup

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Message-Id: <1463656317-13828-1-git-send-email-falakreyaz@gmail.com>
Date:	Thu, 19 May 2016 16:41:45 +0530
From:	Muhammad Falak R Wani <falakreyaz@...il.com>
To:	David Airlie <airlied@...ux.ie>
Cc:	Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	Chunming Zhou <David1.Zhou@....com>,
	Jammy Zhou <Jammy.Zhou@....com>, Leo Liu <leo.liu@....com>,
	Sonny Jiang <sonny.jiang@....com>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH] amdgpu/uvd: use kmemdup

Use kmemdup when some other buffer is immediately copied into allocated
region. It replaces call to allocation followed by memcpy, by a single
call to kmemdup.

Signed-off-by: Muhammad Falak R Wani <falakreyaz@...il.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
index 01abfc2..c977ab6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
@@ -295,12 +295,10 @@ int amdgpu_uvd_suspend(struct amdgpu_device *adev)
 	size = amdgpu_bo_size(adev->uvd.vcpu_bo);
 	ptr = adev->uvd.cpu_addr;
 
-	adev->uvd.saved_bo = kmalloc(size, GFP_KERNEL);
+	adev->uvd.saved_bo = kmemdup(ptr, size, GFP_KERNEL);
 	if (!adev->uvd.saved_bo)
 		return -ENOMEM;
 
-	memcpy(adev->uvd.saved_bo, ptr, size);
-
 	return 0;
 }
 
-- 
1.9.1