linux-kernel - Re: [PATCH v2] earlycon: 8250: Fix command line regression

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Message-ID: <CAE9FiQUfSucr20rj9dQuhbGUWudCHSDOJ_d4SOfHfGxTmre+4w@mail.gmail.com>
Date:	Fri, 3 Apr 2015 20:00:55 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Peter Hurley <peter@...leysoftware.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jiri Slaby <jslaby@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v2] earlycon: 8250: Fix command line regression

On Fri, Apr 3, 2015 at 7:50 PM, Peter Hurley <peter@...leysoftware.com> wrote:
> On 04/03/2015 10:29 PM, Peter Hurley wrote:
>> On 04/03/2015 10:19 PM, Yinghai Lu wrote:
>>> Another regression.
>>> when user have
>>> console=uart8250,io,0x3f8 console=uart8250,io,0x2f8
>>>
>>> before your patchset:
>>> port_0x3f8 is early console, and will be console later.
>>> and port_0x2f8 is ignored, because only ONE early console is allowed.
>>>        and old console setup, only handle ttyS0.
>>>
>>> after your patchset:
>>> port_0x3f8 is early console, and will be console later.
>>> port_0x2f8 will become default console, as new console with match method
>>>    treat all uart8250 as ttyS0.
>>>
>>> Please fix that too.
>>
>> That's a new feature, not a regression.
>
> So, in all seriousness, you actually have this setup and want me to
> fix this?

No.

Just add one count in the console match for it.

>
> IOW, to support more than 1 earlycon in the future will require
> using a totally different command line parameter. Awesome.
>

That is future, right?  Show me patch.

Thanks

Yinghai
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