Re: [PATCH RFC 05/19] drm/exynos: Don't reset bridge->next

From: Boris Brezillon <boris.brezillon@collabora.com>
To: dri-devel@lists.freedesktop.org
Cc: Jernej Skrabec <jernej.skrabec@siol.net>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Jonas Karlman <jonas@kwiboo.se>,
	Seung-Woo Kim <sw0312.kim@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	Thierry Reding <thierry.reding@gmail.com>,
	Chris Healy <Chris.Healy@zii.aero>,
	kernel@collabora.com, Sam Ravnborg <sam@ravnborg.org>
Subject: Re: [PATCH RFC 05/19] drm/exynos: Don't reset bridge->next
Date: Thu, 8 Aug 2019 23:04:09 +0200	[thread overview]
Message-ID: <20190808230409.5ccc753e@collabora.com> (raw)
In-Reply-To: <20190808151150.16336-6-boris.brezillon@collabora.com>

On Thu,  8 Aug 2019 17:11:36 +0200
Boris Brezillon <boris.brezillon@collabora.com> wrote:

> bridge->next is only points to the new bridge if drm_bridge_attach()

		^/is//

> succeeds. No need to reset it manually here.
> 
> Note that this change is part of the attempt to make the bridge chain
> a double-linked list. In order to do that we must patch all drivers
> manipulating the bridge->next field.
> 
> Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
> ---
>  drivers/gpu/drm/exynos/exynos_dp.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c
> index 1e6aa24bf45e..4785885c0f4f 100644
> --- a/drivers/gpu/drm/exynos/exynos_dp.c
> +++ b/drivers/gpu/drm/exynos/exynos_dp.c
> @@ -110,7 +110,6 @@ static int exynos_dp_bridge_attach(struct analogix_dp_plat_data *plat_data,
>  		if (ret) {
>  			DRM_DEV_ERROR(dp->dev,
>  				      "Failed to attach bridge to drm\n");
> -			bridge->next = NULL;
>  			return ret;
>  		}
>  	}

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