linux-kernel - Re: [PATCH v2 3/7] drm/mediatek: mtk_dsi: Rename bridge to next

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Date:   Thu, 16 Apr 2020 20:24:35 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     linux-kernel@...r.kernel.org,
        Collabora Kernel ML <kernel@...labora.com>,
        matthias.bgg@...il.com, drinkcat@...omium.org, hsinyi@...omium.org,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v2 3/7] drm/mediatek: mtk_dsi: Rename bridge to
 next_bridge

Hi Enric,

Thank you for the patch.

On Thu, Apr 16, 2020 at 05:57:15PM +0200, Enric Balletbo i Serra wrote:
> This is really a cosmetic change just to make a bit more readable the
> code after convert the driver to drm_bridge. The bridge variable name
> will be used by the encoder drm_bridge, and the chained bridge will be
> named next_bridge.
> 
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> ---
> 
> Changes in v2: None
> 
>  drivers/gpu/drm/mediatek/mtk_dsi.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
> index cfa45d6abd74..44ee884cc31c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dsi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
> @@ -182,7 +182,7 @@ struct mtk_dsi {
>  	struct drm_encoder encoder;
>  	struct drm_connector conn;
>  	struct drm_panel *panel;
> -	struct drm_bridge *bridge;
> +	struct drm_bridge *next_bridge;
>  	struct phy *phy;
>  
>  	void __iomem *regs;
> @@ -903,8 +903,9 @@ static int mtk_dsi_create_conn_enc(struct drm_device *drm, struct mtk_dsi *dsi)
>  	dsi->encoder.possible_crtcs = 1;
>  
>  	/* If there's a bridge, attach to it and let it create the connector */

Maybe s/bridge/next bridge/ here ? I expect this comment to go away
though, as there will always be a next bridge when the driver switches
to the DRM panel bridge helper.

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

> -	if (dsi->bridge) {
> -		ret = drm_bridge_attach(&dsi->encoder, dsi->bridge, NULL, 0);
> +	if (dsi->next_bridge) {
> +		ret = drm_bridge_attach(&dsi->encoder, dsi->next_bridge, NULL,
> +					0);
>  		if (ret) {
>  			DRM_ERROR("Failed to attach bridge to drm\n");
>  			goto err_encoder_cleanup;
> @@ -1185,7 +1186,7 @@ static int mtk_dsi_probe(struct platform_device *pdev)
>  	}
>  
>  	ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
> -					  &dsi->panel, &dsi->bridge);
> +					  &dsi->panel, &dsi->next_bridge);
>  	if (ret)
>  		goto err_unregister_host;
>  

-- 
Regards,

Laurent Pinchart