Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL

From	Roger Shimizu <rogershimizu@gmail.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL
Date	2016-01-14 14:50 +0100
Message-ID	<qQQrM-7NG-1@gated-at.bofh.it> (permalink)
References	<qQtvc-dp-3@gated-at.bofh.it> <qQzhg-48x-1@gated-at.bofh.it> <qQD1w-6Mu-11@gated-at.bofh.it> <qQDux-6YZ-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

Show all headers | View raw

On Thu, Jan 14, 2016 at 8:46 AM, Ben Hutchings <ben@decadent.org.uk> wrote:
> On Thu, 2016-01-14 at 08:22 +0900, Roger Shimizu wrote:
>> Thanks for your feedback, Uwe!
>>
>> On Thu, Jan 14, 2016 at 4:19 AM, Uwe Kleine-König
>> <uwe+debian@kleine-koenig.org> wrote:
> [...]
>> > Looking at the device tree I'd say it's correct that the gpio cannot be
>> > controlled from user space because it's used to enable usb.
>>
>> I don't understand why it's not able to control the gpio.
>> Could you please explain in detail?
>>
>> I'm the upstream contributor for this DTS.
>> I know there may be something wrong with the gpio part, but I don't
>> know how to know which part is not working.
> [...]
>
> I think the 'gpios' property needs to be named 'gpio'.

Thanks for your reply!

I changed partly / all "gpios" to "gpio", only to find more errors in dmesg.
Original DTS has least error, which is the best so far.

Below command also proves that "gpios" property is popular:
  grep -r gpios arch/arm/boot/dts/

Because previous 3.16 kernel (3.16.7-ckt4-3 or before) and recent
4.2/4.3/4.4 kernel are working fine, I still consider there's a
regression somewhere in 3.16-ckt7 tree.

Cheers,
Roger

Thread

Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Roger Shimizu <rogershimizu@gmail.com> - 2016-01-13 14:20 +0100
  Processed: Re: Bug#810894: src:linux: GPIO probe failure on  Linkstation LS-WXL/WSXL owner@bugs.debian.org (Debian Bug Tracking System) - 2016-01-13 14:30 +0100
  Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Uwe Kleine-König <uwe+debian@kleine-koenig.org> - 2016-01-13 20:30 +0100
    Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Roger Shimizu <rogershimizu@gmail.com> - 2016-01-14 00:30 +0100
      Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Ben Hutchings <ben@decadent.org.uk> - 2016-01-14 01:00 +0100
        Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Roger Shimizu <rogershimizu@gmail.com> - 2016-01-14 14:50 +0100
      Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Uwe Kleine-König <uwe+debian@kleine-koenig.org> - 2016-01-14 15:20 +0100
        Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Roger Shimizu <rogershimizu@gmail.com> - 2016-01-14 15:40 +0100
          Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org> - 2016-01-14 16:40 +0100
            Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Roger Shimizu <rogershimizu@gmail.com> - 2016-01-14 17:00 +0100
              Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Roger Shimizu <rogershimizu@gmail.com> - 2016-01-15 01:10 +0100
          Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Roger Shimizu <rogershimizu@gmail.com> - 2016-01-14 16:50 +0100
            Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Uwe Kleine-König <uwe+debian@kleine-koenig.org> - 2016-01-15 09:20 +0100
              Bug#810894: src:linux: GPIO probe failure on Linkstation LS-WXL/WSXL Roger Shimizu <rogershimizu@gmail.com> - 2016-01-15 15:40 +0100

csiph-web