linux-kernel - [PATCH] drm/amd/powerplay/hwmgr: use kmemdup

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Message-Id: <1463656541-13931-3-git-send-email-falakreyaz@gmail.com>
Date:	Thu, 19 May 2016 16:45:29 +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>,
	Rex Zhu <Rex.Zhu@....com>,
	Eric Huang <JinHuiEric.Huang@....com>,
	Jammy Zhou <Jammy.Zhou@....com>,
	Nils Wallménius <nils.wallmenius@...il.com>,
	Moritz Kühner <kuehner.moritz@...il.com>,
	yanyang1 <young.yang@....com>, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] drm/amd/powerplay/hwmgr: 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/powerplay/hwmgr/tonga_hwmgr.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
index 1faad92..df399fe 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
@@ -6056,11 +6056,11 @@ static int tonga_get_pp_table(struct pp_hwmgr *hwmgr, char **table)
 	struct tonga_hwmgr *data = (struct tonga_hwmgr *)(hwmgr->backend);
 
 	if (!data->soft_pp_table) {
-		data->soft_pp_table = kzalloc(hwmgr->soft_pp_table_size, GFP_KERNEL);
+		data->soft_pp_table = kmemdup(hwmgr->soft_pp_table,
+					      hwmgr->soft_pp_table_size,
+					      GFP_KERNEL);
 		if (!data->soft_pp_table)
 			return -ENOMEM;
-		memcpy(data->soft_pp_table, hwmgr->soft_pp_table,
-				hwmgr->soft_pp_table_size);
 	}
 
 	*table = (char *)&data->soft_pp_table;
-- 
1.9.1