Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Tue, 7 Sep 2021 16:52:38 +0200
From:   Thomas =?utf-8?Q?Wei=C3=9Fschuh?= <linux@weissschuh.net>
To:     Daniel Thompson <daniel.thompson@linaro.org>
Cc:     Lee Jones <lee.jones@linaro.org>,
        Jingoo Han <jingoohan1@gmail.com>,
        dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] backlight: propagate errors from get_brightness()
Message-ID: <cb817cdc-449e-4587-ab79-36be4f49f8d4@t-8ch.de>
References: <20210907124751.6404-1-linux@weissschuh.net>
 <20210907131005.vvaitvcllbte37zp@maple.lan>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <20210907131005.vvaitvcllbte37zp@maple.lan>
Precedence: bulk

On 2021-09-07T14:10+0100, Daniel Thompson wrote:
> On Tue, Sep 07, 2021 at 02:47:51PM +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.
> > 
> > Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
> 
> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>

Thanks!

Thomas