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Date: Wed, 13 Oct 2004 00:03:21 +0100
From: Jon Masters <jonmasters@gmail.com>
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Subject: Re: PPC kernel hangs
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On Tue, 12 Oct 2004 14:36:34 -0700, Eugene Surovegin <ebs@ebshome.net> wrote:

> Did you use ioremap to get valid kernel virtual address for your
> device registers? You generally cannot just use physical address to
> access device from the device driver.

Possibly also use io_block_mapping on ppc to map a block of IO memory
before ioremapping.

Jon.