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Re: [PATCH -queue 4/7] [loongosn] add a new serial port debug function

To: Wu Zhangjin <wuzhangjin@gmail.com>
Subject: Re: [PATCH -queue 4/7] [loongosn] add a new serial port debug function
From: Ralf Baechle <ralf@linux-mips.org>
Date: Mon, 2 Nov 2009 14:29:40 +0100
Cc: Linux-MIPS <linux-mips@linux-mips.org>, yanh@lemote.com, huhb@lemote.com, Zhang Le <r0bertz@gentoo.org>, zhangfx@lemote.com
In-reply-to: <fa536e7b25f41bf1ed1a1e203de389bb970e8174.1255673756.git.wuzhangjin@gmail.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <cover.1255673756.git.wuzhangjin@gmail.com> <fa536e7b25f41bf1ed1a1e203de389bb970e8174.1255673756.git.wuzhangjin@gmail.com>
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User-agent: Mutt/1.5.19 (2009-01-05)
On Fri, Oct 16, 2009 at 02:17:17PM +0800, Wu Zhangjin wrote:

> There is an existing serial port debug function: prom_putchar(), but it
> can only print one char, herein add a new prom_printf(), which works
> like printk, but print to serial port, which is very important to kernel
> debugging.

Does this mean early_printk doesn't work for you?  We rather get that to
work for you than introducing something equivalent.

  Ralf

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