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

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Date:   Sun, 16 Oct 2016 20:07:18 +0200
From:   Andreas Schwab <schwab@...ux-m68k.org>
To:     Paul Burton <paul.burton@...tec.com>
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 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.

-- 
Andreas Schwab, schwab@...ux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."