linux-kernel - Kconfig CONFIG_FB dependency regression

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Message-ID: <6fc4a81f-1a13-bff9-7b2e-d5bec382cb42@synopsys.com>
Date:   Tue, 1 Feb 2022 23:01:24 +0000
From:   Thinh Nguyen <Thinh.Nguyen@...opsys.com>
To:     Kees Cook <keescook@...omium.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Arnd Bergmann <arnd@...nel.org>
CC:     "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        Bing Yuan <Bing.Yuan@...opsys.com>,
        John Youn <John.Youn@...opsys.com>
Subject: Kconfig CONFIG_FB dependency regression

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.

Thanks,
Thinh