linux-kernel - Re: [PATCH 1/3] drm: Avoid circular dependencies for CONFIG

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Message-ID: <CAL_Jsq+Vjz9V=of5XXizTBGEq1Cbx3hU9vi-CC3587B1BXphDQ@mail.gmail.com>
Date:   Thu, 3 Jun 2021 13:48:19 -0500
From:   Rob Herring <robh@...nel.org>
To:     Kees Cook <keescook@...omium.org>, Daniel Vetter <daniel@...ll.ch>
Cc:     Dave Airlie <airlied@...hat.com>, Arnd Bergmann <arnd@...nel.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        kernel test robot <lkp@...el.com>,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Emma Anholt <emma@...olt.net>, Rob Clark <robdclark@...il.com>,
        Sean Paul <sean@...rly.run>,
        Sharat Masetty <smasetty@...eaurora.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Sam Ravnborg <sam@...nborg.org>, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org
Subject: Re: [PATCH 1/3] drm: Avoid circular dependencies for CONFIG_FB

On Thu, Jun 3, 2021 at 3:48 AM Daniel Vetter <daniel@...ll.ch> wrote:
>
> On Wed, Jun 02, 2021 at 02:52:50PM -0700, Kees Cook wrote:
> > When cleaning up other drm config dependencies, it is too easy to create
> > larger problems. Instead, mark CONFIG_FB as a "depends":
> >
> > drivers/gpu/drm/Kconfig:74:error: recursive dependency detected!
> >
> > Suggested-by: Arnd Bergmann <arnd@...nel.org>
> > Link: https://lore.kernel.org/lkml/CAK8P3a3jUQs6c5tESSNMbqfuymewj9FhqRizyHcfOXf8Rgy-nA@mail.gmail.com/
> > Signed-off-by: Kees Cook <keescook@...omium.org>
>
> I rebased this one for -next and applied all three patches to
> drm-misc-next.

Patch 3 is not the right fix and I think breaks some platforms.

Rob