linux-kernel - Re: [PATCH 1/3] kci-gitlab: Introducing GitLab-CI Pipeline for Kernel Testing

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Message-ID: <CAMuHMdV2HkYjowOZBgSZQ3N01UeUTnyv5kjx-82C9YJ+dsgsxQ@mail.gmail.com>
Date: Mon, 4 Mar 2024 12:12:47 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Maxime Ripard <mripard@...nel.org>
Cc: Randy Dunlap <rdunlap@...radead.org>, Guenter Roeck <groeck@...gle.com>, 
	Linus Torvalds <torvalds@...uxfoundation.org>, Nikolai Kondrashov <spbnick@...il.com>, 
	Helen Koike <helen.koike@...labora.com>, linuxtv-ci@...uxtv.org, 
	dave.pigott@...labora.com, linux-kernel@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org, linux-kselftest@...r.kernel.org, 
	gustavo.padovan@...labora.com, pawiecz@...labora.com, 
	tales.aparecida@...il.com, workflows@...r.kernel.org, 
	kernelci@...ts.linux.dev, skhan@...uxfoundation.org, 
	kunit-dev@...glegroups.com, nfraprado@...labora.com, davidgow@...gle.com, 
	cocci@...ia.fr, Julia.Lawall@...ia.fr, laura.nao@...labora.com, 
	ricardo.canuelo@...labora.com, kernel@...labora.com, 
	gregkh@...uxfoundation.org
Subject: Re: [PATCH 1/3] kci-gitlab: Introducing GitLab-CI Pipeline for Kernel Testing

Hi Maxime,

On Mon, Mar 4, 2024 at 11:20 AM Maxime Ripard <mripard@...nel.org> wrote:
> On Mon, Mar 04, 2024 at 11:07:22AM +0100, Geert Uytterhoeven wrote:
> > On Mon, Mar 4, 2024 at 10:15 AM Maxime Ripard <mripard@...nel.org> wrote:
> > > On Mon, Mar 04, 2024 at 09:12:38AM +0100, Geert Uytterhoeven wrote:
> > > > On Sun, Mar 3, 2024 at 10:30 AM Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> > > > ERROR: modpost: "__udivdi3" [drivers/gpu/drm/sun4i/sun4i-drm-hdmi.ko] undefined!
> > > > make[3]: *** [scripts/Makefile.modpost:145: Module.symvers] Error 1
> > > > make[2]: *** [Makefile:1871: modpost] Error 2
> > > > make[1]: *** [Makefile:240: __sub-make] Error 2
> > > > make: *** [Makefile:240: __sub-make] Error 2
> > > >
> > > > No warnings found in log.
> > > > ------------------------------------------------------------------->8---
> > >
> > > The driver is meant for a controller featured in an SoC with a Cortex-A8
> > > ARM CPU and less than a GiB/s memory bandwidth.
> >
> > Good, so the hardware cannot possibly need 64-bit pixel clock values ;-)
>
> This is an early patch to convert that function into a framework hook
> implementation. HDMI 2.1 has a max TMDS character rate of slightly less
> than 6GHz, so larger than 2^32 - 1.
>
> So yes, this driver doesn't need to. The framework does however.

That's gonna be interesting, as the Common Clock Framework does not
support 64-bit clock rates on 32-bit platforms yet...

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68korg

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds