linux-kernel - Re: [PATCH v2] console: Don't prefer first registered if DT specifies stdout-path

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Message-ID: <4033254.tBrl4yKcsP@np-p-burton>
Date:   Mon, 17 Oct 2016 11:33:55 +0100
From:   Paul Burton <paul.burton@...tec.com>
To:     Andreas Schwab <schwab@...ux-m68k.org>
CC:     <linux-mips@...ux-mips.org>, Ralf Baechle <ralf@...ux-mips.org>,
        Tejun Heo <tj@...nel.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        "Jiri Slaby" <jslaby@...e.cz>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        "Ivan Delalande" <colona@...sta.com>,
        Thierry Reding <treding@...dia.com>,
        "Borislav Petkov" <bp@...e.de>, Jan Kara <jack@...e.com>,
        Petr Mladek <pmladek@...e.com>, <linux-kernel@...r.kernel.org>,
        Joe Perches <joe@...ches.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <devicetree@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Frank Rowand <frowand.list@...il.com>,
        <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH v2] console: Don't prefer first registered if DT specifies stdout-path

On Sunday, 16 October 2016 20:07:18 BST Andreas Schwab wrote:
> On Aug 09 2016, Paul Burton <paul.burton@...tec.com> wrote:
> > Fix this by not automatically preferring the first registered console if
> > one is specified by the device tree. This allows consoles to be
> > registered but not enabled, and once the driver for the console selected
> > by stdout-path calls of_console_check() the driver will be added to the
> > list of preferred consoles before any other console has been enabled.
> > When that console is then registered via register_console() it will be
> > enabled as expected.
> 
> This breaks the console on PowerMac.  There is no output and it panics
> eventually.
> 
> Andreas.

Hi Andreas,

Could you share the device tree from your system?

Thanks,
    Paul
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