linux-kernel - Re: [PATCH] backlight: led_bl: fix initial power state

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Message-ID: <20230705144406.GA9021@aspen.lan>
Date:   Wed, 5 Jul 2023 15:44:06 +0100
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     Måns Rullgård <mans@...sr.com>
Cc:     Lee Jones <lee@...nel.org>, Jingoo Han <jingoohan1@...il.com>,
        Helge Deller <deller@....de>, dri-devel@...ts.freedesktop.org,
        linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] backlight: led_bl: fix initial power state

On Wed, Jul 05, 2023 at 03:36:46PM +0100, Måns Rullgård wrote:
> Daniel Thompson <daniel.thompson@...aro.org> writes:
>
> > On Wed, Jul 05, 2023 at 03:24:14PM +0100, Mans Rullgard wrote:
> >> The condition for the initial power state based on the default
> >> brightness value is reversed.  Fix it.
> >>
> >> Furthermore, use the actual state of the LEDs rather than the default
> >> brightness specified in the devicetree as the latter should not cause
> >> the backlight to be automatically turned on.
> >>
> >> If the backlight device is not linked to any display, set the initial
> >> power to on unconditionally.
> >>
> >> Fixes: ae232e45acf9 ("backlight: add led-backlight driver")
> >> Signed-off-by: Mans Rullgard <mans@...sr.com>
> >> ---
> >> Changes in v3:
> >> - Add comment
> >
> > This mismatches the subject line ;-) but I can live with that if Lee
> > and Jingoo can!
>
> Does it not fix it?  If you think the subject is misleading, feel free
> to change it.

The bit that goes into version control is fine!

However without '[PATCH v3]' on the subject line for the initial patch
there is a risk this thread will get overlooked and not queued[1].


Daniel.


[1] Just to be clear, Lee J. typically hoovers up the backlight patches
    and sends the PR. I only queue backlight patches myself as holiday
    cover...