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From:   Neil Armstrong <neil.armstrong@linaro.org>
To:     Andrzej Hajda <andrzej.hajda@intel.com>,
        Robert Foss <rfoss@kernel.org>,
        Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
        Jonas Karlman <jonas@kwiboo.se>,
        Jernej Skrabec <jernej.skrabec@gmail.com>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Maxime Ripard <mripard@kernel.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Francesco Dolcini <francesco.dolcini@toradex.com>,
        Aradhya Bhatia <a-bhatia1@ti.com>,
        Alexander Stein <alexander.stein@ew.tq-group.com>,
        Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Cc:     dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
        Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
In-Reply-To: <20230802-drm-bridge-chain-debugfs-v4-1-7e3ae3d137c0@ideasonboard.com>
References: <20230802-drm-bridge-chain-debugfs-v4-1-7e3ae3d137c0@ideasonboard.com>
Subject: Re: [PATCH v4] drm/bridge: Add debugfs print for bridge chains
Message-Id: <169096358947.1556882.730502701298336758.b4-ty@linaro.org>
Date:   Wed, 02 Aug 2023 10:06:29 +0200
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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