From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] Stop ARM boards crashing when CUPS is loaded - 2.6.35-rc5
Date: Thu, 15 Jul 2010 21:06:18 +0100 [thread overview]
Message-ID: <20100715200618.GA6773@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20100715130214.4c9303b2.akpm@linux-foundation.org>
On Thu, Jul 15, 2010 at 01:02:14PM -0700, Andrew Morton wrote:
> > BugLink: http://bugs.launchpad.net/bugs/601226
> >
> > When CUPS loads, it tries to load several drivers that it may need.
> > When one of these drivers, specifically parport_pc is loaded on ARM
> > based systems, it causes a segmentation fault as the ISA addresses
> > which are attempted are not writable on non-PC based architectures.
> > This code prevents ISA addresses from being attempted except on x86.
> >
>
> That sounds like a pretty serious problem. But presumably it isn't -
> otherwise it would have been fixed earlier!
>
> So what actions are required to trigger this bug and why aren't others
> seeing it?
Note that we have machines which have ISA parallel ports, so it's not
this simple.
Why not just avoid selecting and building parport_pc on these machines?
I mean, the Beagleboard doesn't have PCI nor ISA, so why is parport_pc
being built for production use?
next prev parent reply other threads:[~2010-07-15 20:06 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4C3C72C6.4000005@canonical.com>
2010-07-15 20:02 ` [PATCH] Stop ARM boards crashing when CUPS is loaded - 2.6.35-rc5 Andrew Morton
2010-07-15 20:06 ` Russell King - ARM Linux [this message]
2010-07-16 9:08 ` Lee Jones
2010-07-16 9:20 ` Russell King - ARM Linux
2010-07-16 9:32 ` Lee Jones
2010-07-16 11:12 ` Lee Jones
2010-07-26 22:26 ` Greg KH
2010-07-16 16:23 ` Milton Miller
2010-07-16 16:42 ` Lee Jones
2010-07-16 19:38 ` Milton Miller
2010-07-16 20:54 ` Russell King - ARM Linux
2010-07-16 9:37 ` Martin Michlmayr
2010-07-16 13:27 ` Woody Suwalski
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