linux-kernel - Re: [PATCH] drm: msm: fix building without CONFIG_COMMON

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Message-ID: <CAK8P3a0E4F8eE0Py83Am-huirrvgomUqrwSSr9+vD8RuMZfSGQ@mail.gmail.com>
Date:   Mon, 18 Oct 2021 13:46:35 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Christian König <christian.koenig@....com>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, Arnd Bergmann <arnd@...db.de>,
        Randy Dunlap <rdunlap@...radead.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Alex Elder <elder@...aro.org>,
        Akhil P Oommen <akhilpo@...eaurora.org>,
        Rajeev Nandan <rajeevny@...eaurora.org>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm: msm: fix building without CONFIG_COMMON_CLK

On Mon, Oct 18, 2021 at 1:40 PM Christian König
<christian.koenig@....com> wrote:
> >> I have absolutely no idea how a platform can have IOMMU but no MMU
> >> support but it indeed seems to be the case here.
> > Huh?
> >
> > Parisc has config MMU def_bool y?
>
> Then why vmap isn't available?
>
> See the mail thread: [linux-next:master 3576/7806]
> drivers/gpu/drm/msm/msm_gem.c:624:20: error: implicit declaration of
> function 'vmap'

This is just a missing "#include <linux/vmalloc.h>". It must be
included indirectly
on some architectures but not other.

       Arnd