linux-kernel - Re: [PATCH v6 04/11] drm/mediatek: dp: Use devm variant of drm_bridge

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Message-ID: <0be54099a44dcaeafa3ff930dcd87a780da045fb.camel@mediatek.com>
Date:   Tue, 18 Jul 2023 09:33:36 +0000
From:   CK Hu (胡俊光) <ck.hu@...iatek.com>
To:     "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>,
        "chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "wenst@...omium.org" <wenst@...omium.org>,
        "kernel@...labora.com" <kernel@...labora.com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "nfraprado@...labora.com" <nfraprado@...labora.com>
Subject: Re: [PATCH v6 04/11] drm/mediatek: dp: Use devm variant of
 drm_bridge_add()

Hi, Angelo:

On Mon, 2023-07-17 at 16:14 +0200, AngeloGioacchino Del Regno wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  In preparation for adding support for aux-bus, which will add a code
> path that may fail after the drm_bridge_add() call, change that to
> devm_drm_bridge_add() to simplify failure paths later.

Reviewed-by: CK Hu <ck.hu@...iatek.com>

> 
> Signed-off-by: AngeloGioacchino Del Regno <
> angelogioacchino.delregno@...labora.com>
> Tested-by: Chen-Yu Tsai <wenst@...omium.org>
> ---
>  drivers/gpu/drm/mediatek/mtk_dp.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c
> b/drivers/gpu/drm/mediatek/mtk_dp.c
> index 98f63d8230e4..fc6cabf5370b 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dp.c
> @@ -2552,7 +2552,9 @@ static int mtk_dp_probe(struct platform_device
> *pdev)
>  		DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
> DRM_BRIDGE_OP_HPD;
>  	mtk_dp->bridge.type = mtk_dp->data->bridge_type;
>  
> -	drm_bridge_add(&mtk_dp->bridge);
> +	ret = devm_drm_bridge_add(dev, &mtk_dp->bridge);
> +	if (ret)
> +		return dev_err_probe(dev, ret, "Failed to add
> bridge\n");
>  
>  	mtk_dp->need_debounce = true;
>  	timer_setup(&mtk_dp->debounce_timer, mtk_dp_debounce_timer, 0);
> @@ -2570,7 +2572,6 @@ static int mtk_dp_remove(struct platform_device
> *pdev)
>  	pm_runtime_put(&pdev->dev);
>  	pm_runtime_disable(&pdev->dev);
>  	del_timer_sync(&mtk_dp->debounce_timer);
> -	drm_bridge_remove(&mtk_dp->bridge);
>  	platform_device_unregister(mtk_dp->phy_dev);
>  	if (mtk_dp->audio_pdev)
>  		platform_device_unregister(mtk_dp->audio_pdev);
> -- 
> 2.40.1