linux-kernel - Re: [PATCH 2/3] drm/vc4: Don't try to initialize FBDEV if we're only bound to V3D.

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Date:   Wed, 19 Apr 2017 10:55:31 -0700
From:   Eric Anholt <eric@...olt.net>
To:     Daniel Vetter <daniel@...ll.ch>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        "devicetree\@vger.kernel.org" <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] drm/vc4: Don't try to initialize FBDEV if we're only bound to V3D.

Daniel Vetter <daniel@...ll.ch> writes:

> On Tue, Apr 18, 2017 at 9:11 PM, Eric Anholt <eric@...olt.net> wrote:
>> The FBDEV initialization would throw an error in dmesg, when we just
>> want to silently not initialize fbdev on a V3D-only VC4 instance.
>>
>> Signed-off-by: Eric Anholt <eric@...olt.net>
>
> Hm, this shouldn't be an error really, you might want to hotplug more
> connectors later on. What exactly complains?

drm_fb_helper_init() throws an error if the passed in connector count is
0, so drm_fb_cma_helper() printks an error.

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