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From:   =?UTF-8?q?Guido=20G=C3=BCnther?= <agx@sigxcpu.org>
To:     Marek Vasut <marex@denx.de>, Stefan Agner <stefan@agner.ch>,
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        Emil Velikov <emil.l.velikov@gmail.com>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        dri-devel@lists.freedesktop.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH v1 0/1] drm: mxsfb: Silence -EPROBE_DEFER while waiting for bridge
Date:   Tue, 15 Dec 2020 09:23:37 +0100
Message-Id: <cover.1608020391.git.agx@sigxcpu.org>
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It can take multiple iterations until all components for an attached DSI
bridge are up leading to several:

[    3.796425] mxsfb 30320000.lcd-controller: Cannot connect bridge: -517
[    3.816952] mxsfb 30320000.lcd-controller: [drm:mxsfb_probe [mxsfb]] *ERROR* failed to attach bridge: -517

Silence this by checking for -EPROBE_DEFER and using dev_err_probe() so
we set a deferred reason in case a dependency fails to probe (which
quickly happens on small config/DT changes due to the rather long probe
chain which can include bridges, phys, panels, backights, leds, etc.).

This also removes the only DRM_DEV_ERROR() usage, the rest of the driver
uses dev_err().

Guido Günther (1):
  drm: mxsfb: Silence -EPROBE_DEFER while waiting for bridge

 drivers/gpu/drm/mxsfb/mxsfb_drv.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

-- 
2.29.2