From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Subject: Re: [PATCH] Revert
 "console: don't prefer first registered if DT specifies stdout-path"
Date: Fri, 4 Nov 2016 12:39:03 -0700
Message-ID: <20161104123903.0693053785eb32f63822ac33@linux-foundation.org>
References: <20161104121135.4780-1-hdegoede@redhat.com>
        <20161104121135.4780-2-hdegoede@redhat.com>
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To: Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: Linus Torvalds <torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Paul Burton <paul.burton-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>, Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Frank Rowand <frowand.list-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Thorsten Leemhuis <regressions-rCxcAJFjeRkk+I/owrrOrA@public.gmane.org>, Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>, Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
List-Id: devicetree@vger.kernel.org

On Fri,  4 Nov 2016 13:11:35 +0100 Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:

> 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-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

I've added cc:stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org to my copy of this.
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