linux-kernel - Re: [PATCH 2/2] Use resource_size

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Message-ID: <20070220130634.72b9a02b@localhost.localdomain>
Date:	Tue, 20 Feb 2007 13:06:34 +0000
From:	Alan <alan@...rguk.ukuu.org.uk>
To:	David Gibson <david@...son.dropbear.id.au>
Cc:	Andrew Morton <akpm@...l.org>, <linux-kernel@...r.kernel.org>,
	<rmk@....linux.org.uk>, <linuxppc-dev@...abs.org>
Subject: Re: [PATCH 2/2] Use resource_size_t for serial port IO addresses

On Tue, 20 Feb 2007 14:19:51 +1100 (EST)
David Gibson <david@...son.dropbear.id.au> wrote:

> At present, various parts of the serial code use unsigned long to
> define resource addresses.  This is a problem, because some 32-bit
> platforms have physical addresses larger than 32-bits, and have mmio
> serial uarts located above the 4GB point.
> 
> This patch changes the type of mapbase in both struct uart_port and
> struct plat_serial8250_port to resource_size_t, which can be
> configured to be 64 bits on such platforms.  The mapbase in
> serial_struct can't safely be changed, because that structure is user
> visible.
> 
> Signed-off-by: David Gibson <dwg@....ibm.com>

Acked-by: Alan Cox <alan@...hat.com>
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