From: Horst von Brand <vonbrand@inf.utfsm.cl>
To: "Jörn Engel" <joern@wohnheim.fh-wedel.de>
Cc: Linus Torvalds <torvalds@osdl.org>,
Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Being more anal about iospace accesses..
Date: Wed, 15 Sep 2004 13:36:07 -0400 [thread overview]
Message-ID: <200409151736.i8FHa7lx026449@localhost.localdomain> (raw)
In-Reply-To: Message from =?iso-8859-1?Q?J=F6rn?= Engel <joern@wohnheim.fh-wedel.de> of "Wed, 15 Sep 2004 18:54:50 +0200." <20040915165450.GD6158@wohnheim.fh-wedel.de>
=?iso-8859-1?Q?J=F6rn?= Engel <joern@wohnheim.fh-wedel.de> said:
> On Wed, 15 September 2004 09:30:42 -0700, Linus Torvalds wrote:
[...]
> > For example, if you don't know (or, more importantly - don't care) what
> > kind of IO interface you use, you can now do something like
> >
> > void __iomem * map = pci_iomap(dev, bar, maxbytes);
> > ...
> > status = ioread32(map + DRIVER_STATUS_OFFSET);
> C now supports pointer arithmetic with void*?
It doesn't. It's a gcc-ism.
> I hope the width of a
> void is not architecture dependent, that would introduce more subtle
> bugs.
gcc takes it as a char pointer for such uses.
--
Dr. Horst H. von Brand User #22616 counter.li.org
Departamento de Informatica Fono: +56 32 654431
Universidad Tecnica Federico Santa Maria +56 32 654239
Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513
next prev parent reply other threads:[~2004-09-15 17:38 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.58.0409081543320.5912@ppc970.osdl.org>
[not found] ` <Pine.LNX.4.58.0409150737260.2333@ppc970.osdl.org>
2004-09-15 16:30 ` Linus Torvalds
2004-09-15 16:54 ` Jörn Engel
2004-09-15 17:07 ` Linus Torvalds
2004-09-15 17:32 ` Jörn Engel
2004-09-15 17:57 ` Linus Torvalds
2004-09-15 18:06 ` Linus Torvalds
2004-09-15 19:34 ` Greg KH
2004-09-15 19:53 ` Linus Torvalds
2004-09-15 20:06 ` Greg KH
2004-09-16 14:58 ` Horst von Brand
2004-09-15 17:45 ` Nikita Danilov
2004-09-15 18:09 ` Linus Torvalds
2004-09-15 18:40 ` Chris Wedgwood
2004-09-15 17:07 ` Jeff Garzik
2004-09-15 17:16 ` Roland Dreier
2004-09-15 17:39 ` Linus Torvalds
2004-09-15 20:07 ` Russell King
2004-09-15 17:36 ` Horst von Brand [this message]
2004-09-15 17:40 ` Brian Gerst
2004-09-15 16:56 ` Dave Jones
2004-09-15 17:19 ` Roger Luethi
2004-09-15 17:23 ` Richard B. Johnson
2004-09-15 22:21 ` Deepak Saxena
2004-09-15 22:46 ` Linus Torvalds
2004-09-15 23:09 ` Deepak Saxena
2004-09-16 12:51 ` Geert Uytterhoeven
2004-09-16 22:10 ` Deepak Saxena
2004-09-15 22:29 ` Roland Dreier
2004-09-15 23:26 ` Being more careful " Linus Torvalds
2004-09-16 0:10 ` viro
2004-09-16 11:40 ` David Woodhouse
2004-09-16 12:25 ` David Woodhouse
2004-09-16 14:01 ` Linus Torvalds
2004-09-18 9:46 ` Kai Henningsen
2004-09-15 18:25 Being more anal " linux
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