linux-kernel - Re: [PATCH v4] drm/bridge: Add debugfs print for bridge chains

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Date:   Wed, 02 Aug 2023 10:06:29 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Francesco Dolcini <francesco.dolcini@...adex.com>,
        Aradhya Bhatia <a-bhatia1@...com>,
        Alexander Stein <alexander.stein@...tq-group.com>,
        Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
Subject: Re: [PATCH v4] drm/bridge: Add debugfs print for bridge chains

Hi,

On Wed, 02 Aug 2023 10:04:11 +0300, Tomi Valkeinen wrote:
> DRM bridges are not visible to the userspace and it may not be
> immediately clear if the chain is somehow constructed incorrectly. I
> have had two separate instances of a bridge driver failing to do a
> drm_bridge_attach() call, resulting in the bridge connector not being
> part of the chain. In some situations this doesn't seem to cause issues,
> but it will if DRM_BRIDGE_ATTACH_NO_CONNECTOR flag is used.
> 
> [...]

Thanks, Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next)

[1/1] drm/bridge: Add debugfs print for bridge chains
      https://cgit.freedesktop.org/drm/drm-misc/commit/?id=8e4bb53c902ed2b06a2c4778e6dbb2c1eeec4960

-- 
Neil