From: Jon Masters <jonathan@jonmasters•org>
To: jonathan@jonmasters•org, Rupesh S <rupesh.sugathan@gmail•com>,
linuxppc-embedded@ozlabs•org
Subject: Re: PPC kernel hangs
Date: Wed, 13 Oct 2004 19:00:20 +0100 [thread overview]
Message-ID: <20041013180020.GC29369@apogee.jonmasters.org> (raw)
In-Reply-To: <20041012233432.GB24352@gate.ebshome.net>
On Tue, Oct 12, 2004 at 04:34:32PM -0700, Eugene Surovegin wrote:
> On Wed, Oct 13, 2004 at 12:03:21AM +0100, Jon Masters wrote:
> > 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.
>
> Yes, this is possible but considered obsoleted and not-recommended way
> of accessing device registers.
I realised that after I said it, old habbit.
Jon.
next prev parent reply other threads:[~2004-10-13 22:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-12 21:24 PPC kernel hangs Rupesh S
2004-10-12 21:36 ` Eugene Surovegin
2004-10-12 23:03 ` Jon Masters
2004-10-12 23:05 ` Jon Masters
2004-10-12 23:34 ` Eugene Surovegin
2004-10-13 18:00 ` Jon Masters [this message]
2004-10-14 16:44 ` Rupesh S
2004-10-14 21:23 ` Jon Masters
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