linux-kernel - Re: [PATCH v2] backlight: propagate errors from get

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Message-ID: <b25975d3-f417-4cba-92d1-35c93d37e1e6@t-8ch.de>
Date:   Tue, 21 Sep 2021 16:50:06 +0200
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org
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.

> [..]

Friendly ping.