linux-kernel - Re: [PATCH AUTOSEL 5.4 1/6] ARM: config: mutli v7: Reenable FB dependency

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Date:   Wed, 13 Oct 2021 10:39:52 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Sasha Levin <sashal@...nel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "# 3.4.x" <stable@...r.kernel.org>, Joel Stanley <joel@....id.au>,
        Arnd Bergmann <arnd@...db.de>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Alexandre TORGUE <alexandre.torgue@...s.st.com>,
        Thierry Reding <treding@...dia.com>,
        Dmitry Osipenko <digetx@...il.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Olivier Moysan <olivier.moysan@...com>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Stefan Wahren <stefan.wahren@...e.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH AUTOSEL 5.4 1/6] ARM: config: mutli v7: Reenable FB dependency

On Wed, Oct 13, 2021 at 2:55 AM Sasha Levin <sashal@...nel.org> wrote:
>
> From: Joel Stanley <joel@....id.au>
>
> [ Upstream commit 8c1768967e2733d55abf449d8abd6f1915ba3539 ]
>
> DRM_FBDEV_EMULATION previously selected FB and was default y as long as DRM
> was enabled. In commit f611b1e7624c ("drm: Avoid circular dependencies for
> CONFIG_FB") the select was replaced with a depends on FB, disabling the
> drivers that depended on it.
>
> Renable FB so we get back FB_EFI, FB_WM8505, FB_SH_MOBILE_LCDC, FB_SIMPLE and
> VIDEO_VIVID.
>
> It must be set to y and not a module as the test driver VIDEO_VIVID
> requires it to be built in.
>
> Link: https://lore.kernel.org/r/CAK8P3a18EdBKQdGDOZc9cPKsf=hY8==v2cO0DBE_tyd82Uq-Ng@mail.gmail.com
> Signed-off-by: Joel Stanley <joel@....id.au>
> Reviewed-by: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Signed-off-by: Sasha Levin <sashal@...nel.org>

This is only needed to fix regressions from f611b1e7624c, which made it into
v5.14. I don't think that patch should be backported, so neither
should this one.

       Arnd