Re: [PATCH 1/1] ACPI: pci_irq, add PRT_ quirk for IBM Bartolo

[Jiri Slaby <jslaby@suse.cz>]

On 06/28/2010 11:37 PM, Robert Hancock wrote:
> On Mon, Jun 28, 2010 at 2:48 PM, Matthew Garrett <mjg59@srcf.ucam.org> wrote:
>> I can guarantee to you that a generic Windows install does not have a
>> quirk for an IBM PoS system released years after that CD was pressed.

The system in question is very old, any current Windows release is newer
than that.

>> The relevance is that if Windows works without a quirk, then somewhere
>> our behaviour diverges from that of Windows and it's likely that other
>> machines are also hit by the same issue. Users of those systems may not
>> have a support contract with a commercial Linux vendor and may just
>> decide to use Windows instead, so there's an incentive for us to
>> determine if that's the case and fix Linux's behaviour to match Windows
>> rather than to just quirk over it.
> 
> Exactly, this seems like a pretty obvious failure, so either IBM's
> testing on this machine under Windows was hopelessly inadequate and it
> is broken there too, or else Windows is doing something different and
> maybe we should be doing the same thing..

The answer I got is "it works there with a driver" whatever it means
(I'm no expert on windows drivers and have no idea what they can do and
what quirks can be implemented that way).

regards,
-- 
js
suse labs