linux-kernel - Re: Fwd: Does not work backlight on Chromebook XE303C12 with Kernel version 6.3.4

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Date:   Sat, 27 May 2023 07:52:07 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        DRI Development List <dri-devel@...ts.freedesktop.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Samsung SoC Support <linux-samsung-soc@...r.kernel.org>
Cc:     Lee Jones <lee@...nel.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andrew <quark@...root.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: Re: Fwd: Does not work backlight on Chromebook XE303C12 with Kernel
 version 6.3.4

On Fri, May 26, 2023 at 08:46:32PM +0700, Bagas Sanjaya wrote:
> Hi,
> 
> I notice a regression report on Bugzilla [1]. Quoting from it:
> 
> > I did check it by flashlight. Even with all available backlights drivers compiled as modules it does not work. With Kernel version 5.15.106 backlight works fine.
> > Kernels for Chomebook uses dtb files that have some backlight config set (used gpio), like exynos5250-snow-common.dtsi and dmesg of 6.3.4 gives some gpio warnings. Maybe cause in it.
> 
> See bugzilla for the full thread and attached dmesg & kernel config.
> 
> Anyway, I'm adding it to regzbot:
> 
> #regzbot introduced: v5.15..v6.3 https://bugzilla.kernel.org/show_bug.cgi?id=217489
> #regzbot title: Chromebook XE303C12 backlight stopped working with gpio warnings

The reporter confirms [1] that he doesn't have this regression (for now) on
v6.3.x (not reproducible), so I mark it as inconclusive:

#regzbot inconclusive: not a kernel regression

Thanks.

[1]: https://lore.kernel.org/regressions/288db372-9797-540f-e8bd-794a23648573@gmail.com/t.mbox.gz
 
-- 
An old man doll... just what I always wanted! - Clara

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