linux-kernel - Re: [PATCH 1/4] drm/mediatek: mtk_dpi: Simplify with devm_drm_bridge

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Date:   Thu, 13 Jul 2023 13:14:43 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Fei Shao <fshao@...omium.org>
Cc:     chunkuang.hu@...nel.org, p.zabel@...gutronix.de, airlied@...il.com,
        daniel@...ll.ch, matthias.bgg@...il.com,
        dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH 1/4] drm/mediatek: mtk_dpi: Simplify with
 devm_drm_bridge_add()

Il 13/07/23 09:55, Fei Shao ha scritto:
> Hi Angelo,
> 
> On Wed, Apr 12, 2023 at 7:53 PM AngeloGioacchino Del Regno
> <angelogioacchino.delregno@...labora.com> wrote:
>>
>> Change drm_bridge_add() to its devm variant to slightly simplify the
>> probe function.
>>
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>> ---
>>   drivers/gpu/drm/mediatek/mtk_dpi.c | 5 +++--
>>   1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
>> index 948a53f1f4b3..2d5f3fc34f61 100644
>> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
>> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
>> @@ -1090,11 +1090,12 @@ static int mtk_dpi_probe(struct platform_device *pdev)
>>          dpi->bridge.of_node = dev->of_node;
>>          dpi->bridge.type = DRM_MODE_CONNECTOR_DPI;
>>
>> -       drm_bridge_add(&dpi->bridge);
>> +       ret = devm_drm_bridge_add(dev, &dpi->bridge);
>> +       if (ret)
>> +               return ret;
> 
> And also drop the drm_bridge_remove() call in mtk_dpi_remove()?
> 

Yes. V2 will drop that.

Cheers,
Angelo

> Regards,
> Fei
> 
>>
>>          ret = component_add(dev, &mtk_dpi_component_ops);
>>          if (ret) {
>> -               drm_bridge_remove(&dpi->bridge);
>>                  dev_err(dev, "Failed to add component: %d\n", ret);
>>                  return ret;
>>          }
>> --
>> 2.40.0
>>
>>
>