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Date:   Tue, 21 Sep 2021 16:50:06 +0200
From:   Thomas Weißschuh <>
To:     Lee Jones <>,
        Daniel Thompson <>,
        Jingoo Han <>,,
Subject: Re: [PATCH v2] backlight: propagate errors from get_brightness()

On 2021-09-07T14:47+0200, Thomas Weißschuh wrote:
> backlight.h documents "struct backlight_ops->get_brightness()" to return
> a negative errno on failure.
> So far these errors have not been handled in the backlight core.
> This leads to negative values being exposed through sysfs although only
> positive values are documented to be reported.

> [..]

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