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From:   Fabio Estevam <festevam@gmail.com>
Date:   Tue, 1 Feb 2022 20:59:59 -0300
Message-ID: <CAOMZO5Aa4WxuadfoFGwwyYyD4UGPm-E258xTWU3-ozp_hwG-7g@mail.gmail.com>
Subject: Re: Kconfig CONFIG_FB dependency regression
To:     Randy Dunlap <rdunlap@infradead.org>
Cc:     Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
        Kees Cook <keescook@chromium.org>,
        Daniel Vetter <daniel.vetter@ffwll.ch>,
        Arnd Bergmann <arnd@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "dri-devel@lists.freedesktop.org" <dri-devel@lists.freedesktop.org>,
        John Youn <John.Youn@synopsys.com>,
        Bing Yuan <Bing.Yuan@synopsys.com>,
        "linux-mediatek@lists.infradead.org" 
        <linux-mediatek@lists.infradead.org>,
        "linux-arm-kernel@lists.infradead.org" 
        <linux-arm-kernel@lists.infradead.org>
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Hi Thinh,

On Tue, Feb 1, 2022 at 8:06 PM Randy Dunlap <rdunlap@infradead.org> wrote:
>
> On 2/1/22 15:01, Thinh Nguyen wrote:
> > Hi,
> >
> > One of our test setups is unable to boot (stuck at initramfs). Git
> > bisection points to the commit below:
> >
> > f611b1e7624c ("drm: Avoid circular dependencies for CONFIG_FB")
> >
> > Reverting this patch resolves the issue. This issue persists in mainline
> > also. Unfortunately there isn't any meaningful log. Hopefully someone
> > can give some insight as to what could be the issue and revert/fix this
> > issue.
>
> Hi,
> Did you enable DRM_FBDEV_EMULATION?
> Please provide the failing .config file.

Does selecting CONFIG_FB=y help?

We had to manually select this option in imx_v6_v7_defconfig after f611b1e7624c.

Please see:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.17-rc2&id=c54467482ffd407a4404c990697f432bfcb6cdc4