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From: Arnd Bergmann <arnd@arndb.de>
To: linuxppc-dev@ozlabs.org
Cc: sl@powerlinux.fr, Philippe Lachenal <philippe.lachenal@hotmail.fr>
Subject: Re: MPC8349ea Random Number Generator driver
Date: Thu, 7 Jun 2007 16:03:14 +0200	[thread overview]
Message-ID: <200706071603.15837.arnd@arndb.de> (raw)
In-Reply-To: <BAY122-F20901751968A5E85E76FBB85260@phx.gbl>

On Thursday 07 June 2007, Philippe Lachenal wrote:
> +-
> +-=A0=A0=A0=A0=A0=A0return ioremap(res.start, 1 + res.end - res.start);
> +-}
>=20
>=20
> why is there a =A01+ res.end-res.start ? Am I wrong in not adding one in =
my=20
> code ?
>=20

Yes. The res.start is the first byte in the area, res.end is the last one.
=46or example, in a two byte range, start could be 100, and end 101.
res.end - res.start would therefore be one, not two as ioremap expects.

	Arnd <><

  reply	other threads:[~2007-06-07 14:03 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-06-05 15:42 MPC8349ea Random Device Generator driver Philippe Lachenal
2007-06-06 14:15 ` Arnd Bergmann
2007-06-07 11:29   ` MPC8349ea Random Number " Philippe Lachenal
2007-06-07 14:03     ` Arnd Bergmann [this message]
2007-06-06 21:57 ` MPC8349ea Random Device " Timur Tabi
2007-06-06 22:09   ` Olof Johansson
2007-06-06 22:07     ` Timur Tabi
2007-06-06 22:11       ` Arnd Bergmann
2007-06-06 22:19         ` Timur Tabi
2007-06-06 22:35           ` Arnd Bergmann
2007-06-06 22:38             ` Timur Tabi
2007-06-06 22:24       ` Olof Johansson
2007-06-06 22:32         ` Timur Tabi
2007-06-06 23:54           ` Olof Johansson
2007-06-07 14:23             ` Timur Tabi
2007-06-07 15:20               ` Olof Johansson
2007-06-07 15:20                 ` Timur Tabi
2007-06-07 15:36                   ` Olof Johansson
2007-06-06 22:48         ` Timur Tabi
2007-06-07  0:00           ` Olof Johansson
2007-06-07  2:55 ` Kim Phillips

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