linux-kernel - Re: [PATCH 56/68] serial: MMIO32 support for 8250

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Date:	Thu, 12 Aug 2010 11:43:15 -0700
From:	Tony Luck <tony.luck@...el.com>
To:	Greg Kroah-Hartman <gregkh@...e.de>
Cc:	linux-kernel@...r.kernel.org,
	Samium Gromoff <_deepfire@...lingofgreen.ru>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 56/68] serial: MMIO32 support for 8250_early.c

On Tue, Aug 10, 2010 at 2:59 PM, Greg Kroah-Hartman <gregkh@...e.de> wrote:
> +       if (mmio || mmio32)
> +               printk(KERN_INFO
> +                      "Early serial console at MMIO%s 0x%llu (options '%s')\n",
> +                       mmio32 ? "32" : "",
> +                       (unsigned long long)port->mapbase,
> +                       device->options);
> +       else
> +               printk(KERN_INFO
> +                     "Early serial console at I/O port 0x%lu (options '%s')\n",
> +                       port->iobase,
> +                       device->options);
> +

This change looks to be responsible for some confusing dmesg output. Here's some
diff between v2.6.35 and current Linus tree:


< Early serial console at I/O port 0x3f8 (options '115200')
---
> Early serial console at I/O port 0x1016 (options '115200')

Note that my serial port didn't move to a different address. Hex(3f8)
== Decimal(1016)

I think those two printk formats should be using 'x' format rather than 'u' :-)

-Tony
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