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

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Message-ID: <89c599d2-6766-df68-5359-7672679b3d89@gmail.com>
Date:   Sat, 19 Sep 2020 20:31:51 +0100
From:   Alex Dewar <alex.dewar90@...il.com>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     Andrzej Hajda <a.hajda@...sung.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: Re: [PATCH] drm/bridge: dw-mipi-dsi: Use kmemdup cf. kmalloc+memcpy

On 2020-09-11 13:57, Neil Armstrong wrote:
> On 09/09/2020 21:02, Alex Dewar wrote:
>> kmemdup can be used instead of kmalloc+memcpy. Replace an occurrence of
>> this pattern.
Friendly ping?
>>
>> 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],
>>
> Acked-by: Neil Armstrong <narmstrong@...libre.com>
>
> Thanks,
> Neil