From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: "Kristian Høgsberg" <krh@redhat.com>,
"David Miller" <davem@davemloft.net>,
linux-kernel@vger.kernel.org,
linux1394-devel@lists.sourceforge.net
Subject: Re: [PATCH 0/3] New firewire stack
Date: Wed, 06 Dec 2006 08:41:49 +1100 [thread overview]
Message-ID: <1165354909.5469.11.camel@localhost.localdomain> (raw)
In-Reply-To: <4575BF51.1070109@s5r6.in-berlin.de>
On Tue, 2006-12-05 at 19:49 +0100, Stefan Richter wrote:
> Kristian Høgsberg wrote:
> > David Miller wrote:
> >> From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> >>> DO NOT USE BITFIELDS FOR DATA ON THE WIRE !!!
>
> Actually we do so in some places of the existing FireWire drivers.
> Didn't go wrong so far. :-)
Yeah, because you used
#if defined __BIG_ENDIAN_BITFIELD
and
#if defined __LITTLE_ENDIAN_BITFIELD
which relies on the fact that it -seems- that by luck, gcc only has two
representations around and they match little/big endian archs (though
have we verified that is always correct, especially between 32 and 64
bits archs ?)
It's still wrong to do.
Cheers,
Ben.
next prev parent reply other threads:[~2006-12-05 21:48 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-05 5:22 [PATCH 0/3] New firewire stack Kristian Høgsberg
2006-12-05 5:22 ` [PATCH 2/3] Import fw-ohci driver Kristian Høgsberg
2006-12-05 5:54 ` Pete Zaitcev
2006-12-05 5:58 ` Jeff Garzik
2006-12-05 6:09 ` Benjamin Herrenschmidt
2006-12-09 2:08 ` Kristian Høgsberg
2006-12-09 7:31 ` Stefan Richter
2006-12-10 21:47 ` Kristian Høgsberg
2006-12-10 22:59 ` Stefan Richter
2006-12-10 23:00 ` alignment and packing of struct types (was Re: [PATCH 2/3] Import fw-ohci driver.) Stefan Richter
2006-12-05 5:22 ` [PATCH 3/3] Import fw-sbp2 driver Kristian Høgsberg
2006-12-05 6:07 ` Jeff Garzik
2006-12-05 18:18 ` Stefan Richter
2006-12-14 20:48 ` Kristian Høgsberg
2006-12-14 21:40 ` Stefan Richter
2006-12-15 15:08 ` Kristian Høgsberg
2006-12-15 18:27 ` Stefan Richter
2006-12-05 5:42 ` [PATCH 0/3] New firewire stack Benjamin Herrenschmidt
2006-12-05 6:20 ` Kristian Høgsberg
2006-12-05 16:28 ` Ray Lee
2006-12-05 23:24 ` Kristian Høgsberg
2006-12-05 7:05 ` David Miller
2006-12-05 16:42 ` Kristian Høgsberg
2006-12-05 18:49 ` Stefan Richter
2006-12-05 21:41 ` Benjamin Herrenschmidt [this message]
2006-12-05 23:15 ` Stefan Richter
2006-12-05 8:46 ` Marcel Holtmann
2006-12-05 15:13 ` Kristian Høgsberg
2006-12-05 15:30 ` Marcel Holtmann
2006-12-06 16:21 ` Geert Uytterhoeven
2006-12-06 16:32 ` Stefan Richter
2006-12-05 16:05 ` Erik Mouw
2006-07-12 14:56 ` Pavel Machek
2006-12-08 15:09 ` Stefan Richter
2006-12-09 19:44 ` Kristian Høgsberg
2006-12-10 12:57 ` Stefan Richter
2006-12-10 22:17 ` Kristian Høgsberg
2006-12-10 23:21 ` Stefan Richter
2006-12-09 21:51 ` Benjamin Herrenschmidt
2006-12-09 22:51 ` Stefan Richter
2006-12-05 16:53 ` Marcel Holtmann
2006-12-05 23:27 ` Kristian Høgsberg
2006-12-05 18:49 ` Alexey Dobriyan
2006-12-05 19:53 ` Stefan Richter
2006-12-05 23:21 ` Kristian Høgsberg
2006-12-06 5:35 ` Ben Collins
2006-12-06 8:56 ` Stefan Richter
2006-12-06 11:40 ` Alexander Neundorf
2006-12-06 12:38 ` Stefan Richter
2006-12-06 21:21 ` Kristian Høgsberg
2006-12-06 14:49 ` Ben Collins
2006-12-07 0:31 ` Kristian Høgsberg
2006-12-06 8:36 ` Stefan Richter
2006-12-06 22:27 ` Kristian Høgsberg
2006-12-06 23:55 ` Stefan Richter
2006-12-05 23:23 ` Olaf Hering
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