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SubjectRe: [PATCH] Stop ARM boards crashing when CUPS is loaded - 2.6.35-rc5
On Thu, Jul 15, 2010 at 01:02:14PM -0700, Andrew Morton wrote:
> > BugLink:
> >
> > 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?

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