linux-kernel - [PATCH] drm/bridge: dw-mipi-dsi: Use kmemdup cf. kmalloc+memcpy

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Date:   Wed,  9 Sep 2020 20:02:08 +0100
From:   Alex Dewar <alex.dewar90@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Alex Dewar <alex.dewar90@...il.com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Philippe Cornu <philippe.cornu@...com>,
        Yannick Fertré <yannick.fertre@...com>,
        Antonio Borneo <antonio.borneo@...com>,
        Heiko Stuebner <heiko.stuebner@...obroma-systems.com>,
        Angelo Ribeiro <Angelo.Ribeiro@...opsys.com>,
        Markus Elfring <elfring@...rs.sourceforge.net>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drm/bridge: dw-mipi-dsi: Use kmemdup cf. kmalloc+memcpy

kmemdup can be used instead of kmalloc+memcpy. Replace an occurrence of
this pattern.

Issue identified with Coccinelle.

Signed-off-by: Alex Dewar <alex.dewar90@...il.com>
---
 drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
index 52f5c5a2ed64..7e9a62ad56e8 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c
@@ -1049,12 +1049,10 @@ static void debugfs_create_files(void *data)
 	};
 	int i;
 
-	dsi->debugfs_vpg = kmalloc(sizeof(debugfs), GFP_KERNEL);
+	dsi->debugfs_vpg = kmemdup(debugfs, sizeof(debugfs), GFP_KERNEL);
 	if (!dsi->debugfs_vpg)
 		return;
 
-	memcpy(dsi->debugfs_vpg, debugfs, sizeof(debugfs));
-
 	for (i = 0; i < ARRAY_SIZE(debugfs); i++)
 		debugfs_create_file(dsi->debugfs_vpg[i].name, 0644,
 				    dsi->debugfs, &dsi->debugfs_vpg[i],
-- 
2.28.0