linux-kernel - Re: build failure of next-20220906 due to 396369d67549 ("drm: vkms: Add support to the RGB565 format")

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Date:   Wed, 7 Sep 2022 19:34:44 +0100
From:   Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:     Melissa Wen <mwen@...lia.com>
Cc:     Igor Torrente <igormtorrente@...il.com>,
        Melissa Wen <melissa.srw@...il.com>,
        Haneen Mohammed <hamohammed.sa@...il.com>,
        Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>,
        David Airlie <airlied@...ux.ie>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-next <linux-next@...r.kernel.org>
Subject: Re: build failure of next-20220906 due to 396369d67549 ("drm: vkms:
 Add support to the RGB565 format")

Hi Melissa,

On Wed, Sep 7, 2022 at 6:05 PM Melissa Wen <mwen@...lia.com> wrote:
>
> On 09/06, Sudip Mukherjee wrote:
> > On Tue, Sep 6, 2022 at 4:59 PM Sudip Mukherjee (Codethink)
> > <sudipm.mukherjee@...il.com> wrote:
> > >
> > > Hi All,
> > >
> > > The builds of next-20220906 fails for mips, xtensa and arm allmodconfig.
> > >
> > > The errors in mips and xtensa are:
> > >
> > > ERROR: modpost: "__divdi3" [drivers/gpu/drm/vkms/vkms.ko] undefined!
> > > ERROR: modpost: "__udivdi3" [drivers/gpu/drm/vkms/vkms.ko] undefined!
> > >
> > > The error in arm is:
> > >
> > > ERROR: modpost: "__aeabi_uldivmod" [drivers/gpu/drm/vkms/vkms.ko] undefined!
> > > ERROR: modpost: "__aeabi_ldivmod" [drivers/gpu/drm/vkms/vkms.ko] undefined!
> > >
> > >
> > > Trying to do a git bisect to find out the offending commit.
> >
> > git bisect points to 396369d67549 ("drm: vkms: Add support to the
> > RGB565 format")
>
> Hi Sudip,
>
> Thanks for pointing out this issue.
>
> I think we can replace the macros that are triggering those compilation
> error by functions in drm/drm_fixed.h that do the same calculation.
>
> I checked those errors when building for arm and i386 and the issues are
> fixed after applying the patch below. I appreciate if you can test.

Sorry, could not test as the downloaded mbox is saying patch is
corrupted and could not be applied. Can you please attach the patch or
maybe send using git send-email.


-- 
Regards
Sudip