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From: Dave Airlie <airlied@gmail.com>
Date: Tue, 8 Nov 2016 16:40:10 +1000
Message-ID: <CAPM=9tzXO1AmhoRvU7mXmt1ib=JnLfJAy+=P1W2OsVWtakJxFg@mail.gmail.com>
Subject: Re: [PATCH v2] drm/udl: Ensure channel is selected before using the device.
To: poma <pomidorabelisima@gmail.com>
Cc: Jamie Lentin <jm@lentin.co.uk>, David Airlie <airlied@linux.ie>,
        dri-devel <dri-devel@lists.freedesktop.org>,
        LKML <linux-kernel@vger.kernel.org>
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> [drm:udl_driver_load [udl]] *ERROR* Selecting channel failed
> udl 1-2:1.0: fb1: udldrmfb frame buffer device
> [drm] Initialized udl on minor 1
> usbcore: registered new interface driver udl
>
>
> Is this expected WARN?

I've just posted a patch in theory to fix it, please test if oyu have time.

Dave.