Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as output

From	Paul Kocialkowski <contact@paulk.fr>
Newsgroups	linux.kernel
Subject	Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as output
Date	2017-04-17 17:40 +0200
Message-ID	<txgUW-2mc-21@gated-at.bofh.it> (permalink)
References	<twPUJ-2A3-1@gated-at.bofh.it> <twZr3-8it-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi,

Le dimanche 16 avril 2017 à 22:55 +0200, Geert Uytterhoeven a écrit :
> On Sun, Apr 16, 2017 at 12:35 PM, Paul Kocialkowski <contact@paulk.fr> wrote:
> > The move to a dedicated pwm_backlight_initial_power_state function in
> > commit 7613c922315e308a6486d802abed2eb74443dffd modified the condition
> > to set the enable gpio as output. This breaks specific use cases using
> > that GPIO, such as tegra124-based nyan Chromebooks where backlight
> > stopped working.
> > 
> > This puts the condition back to the way it was before the move.
> > 
> > Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
> 
> Does "[PATCH v2] backlight: pwm_bl: Fix GPIO out for unimplemented
> .get_direction()"
> (https://lkml.org/lkml/2017/4/4/225) fix your issue?

This definitely solves the issue!

Since this fixes broken backlight (that, in turn, makes systems unusable),
perhaps this should be included in the next rc cycle?

Cheers!

-- 
Paul Kocialkowski, developer of free digital technology at the lower levels

Website: https://www.paulk.fr/
Coding blog: https://code.paulk.fr/
Git repositories: https://git.paulk.fr/ https://git.code.paulk.fr/

Thread

[PATCH] backlight: pwm_bl: Fix condition to set enable gpio as output Paul Kocialkowski <contact@paulk.fr> - 2017-04-16 12:50 +0200
  Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as output Geert Uytterhoeven <geert@linux-m68k.org> - 2017-04-16 23:00 +0200
    Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as  output Paul Kocialkowski <contact@paulk.fr> - 2017-04-17 17:40 +0200
      Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as output Geert Uytterhoeven <geert@linux-m68k.org> - 2017-04-17 21:40 +0200
        Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as  output Paul Kocialkowski <contact@paulk.fr> - 2017-04-18 11:00 +0200
          Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as  output Daniel Thompson <daniel.thompson@linaro.org> - 2017-04-20 12:00 +0200
            Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as output Geert Uytterhoeven <geert@linux-m68k.org> - 2017-04-20 12:20 +0200
            Re: [PATCH] backlight: pwm_bl: Fix condition to set enable gpio as  output Paul Kocialkowski <contact@paulk.fr> - 2017-04-22 15:10 +0200

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