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Re: [PATCH] Revert "console: don't prefer first registered if DT specifies stdout-path"

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Hans de Goede <hdegoede@redhat.com> writes:

> This reverts commit 05fd007e4629 ("console: don't prefer first registered
> if DT specifies stdout-path").
>
> The reverted commit changes existing behavior on which many ARM boards
> rely. Many ARM small-board-computers, like e.g. the Raspberry Pi have
> both a video output and a serial console. Depending on whether the user
> is using the device as a more regular computer; or as a headless device
> we need to have the console on either one or the other.
>
> Many users rely on the kernel behavior of the console being present on
> both outputs, before the reverted commit the console setup with no
> console= kernel arguments on an ARM board which sets stdout-path in dt
> would look like this:
>
> [root@localhost ~]# cat /proc/consoles
> ttyS0                -W- (EC p a)    4:64
> tty0                 -WU (E  p  )    4:1
>
> Where as after the reverted commit, it looks like this:
>
> [root@localhost ~]# cat /proc/consoles
> ttyS0                -W- (EC p a)    4:64
>
> This commit reverts commit 05fd007e4629 ("console: don't prefer first
> registered if DT specifies stdout-path") restoring the original behavior.
>
> Signed-off-by: Hans de Goede <hdegoede@redhat.com>

This is also breaking various powerpc systems.

Linus can you please merge this revert for 4.9 ?

cheers

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[REGRESSION] "console: don't prefer first registered if DT specifies stdout-path" breaks console on video outputs of various ARM boards Hans de Goede <hdegoede@redhat.com> - 2016-11-04 13:20 +0100
  [PATCH] Revert "console: don't prefer first registered if DT specifies stdout-path" Hans de Goede <hdegoede@redhat.com> - 2016-11-04 13:20 +0100
    Re: [PATCH] Revert  "console: don't prefer first registered if DT specifies stdout-path" Andrew Morton <akpm@linux-foundation.org> - 2016-11-04 20:40 +0100
    Re: [PATCH] Revert "console: don't prefer first registered if DT specifies stdout-path" Michael Ellerman <mpe@ellerman.id.au> - 2016-11-08 01:50 +0100
      Re: [PATCH] Revert "console: don't prefer first registered if DT  specifies stdout-path" Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-08 08:10 +0100
        Re: [PATCH] Revert "console: don't prefer first registered if DT  specifies stdout-path" Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-11-10 15:20 +0100
  Re: [REGRESSION] "console: don't prefer first registered if DT specifies stdout-path" breaks console on video outputs of various ARM boards Paul Burton <paul.burton@imgtec.com> - 2016-11-04 13:40 +0100
    Re: [REGRESSION] "console: don't prefer first registered if DT  specifies stdout-path" breaks console on video outputs of various ARM boards Hans de Goede <hdegoede@redhat.com> - 2016-11-04 14:30 +0100
      Re: [REGRESSION] "console: don't prefer first registered if DT specifies stdout-path" breaks console on video outputs of various ARM boards Paul Burton <paul.burton@imgtec.com> - 2016-11-05 13:10 +0100
        Re: [REGRESSION] "console: don't prefer first registered if DT  specifies stdout-path" breaks console on video outputs of various ARM boards Hans de Goede <hdegoede@redhat.com> - 2016-11-06 12:00 +0100
          Re: [REGRESSION] "console: don't prefer first registered if DT specifies stdout-path" breaks console on video outputs of various ARM boards Paul Burton <paul.burton@imgtec.com> - 2016-11-07 18:20 +0100
            Re: [REGRESSION] "console: don't prefer first registered if DT  specifies stdout-path" breaks console on video outputs of various ARM boards Hans de Goede <hdegoede@redhat.com> - 2016-11-08 10:20 +0100
      Re: [REGRESSION] "console: don't prefer first registered if DT specifies stdout-path" breaks console on video outputs of various ARM boards Paul Burton <paul.burton@imgtec.com> - 2016-11-05 13:20 +0100
  Re: [REGRESSION] "console: don't prefer first registered if DT  specifies stdout-path" breaks console on video outputs of various ARM boards Thorsten Leemhuis <regressions@leemhuis.info> - 2016-11-06 13:20 +0100

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