linux-kernel - Re: [PATCH 1/1] ACPI: pci_irq, add PRT

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Message-ID: <4C283D84.6080504@suse.cz>
Date:	Mon, 28 Jun 2010 08:13:24 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	Robert Hancock <hancockrwd@...il.com>
CC:	lenb@...nel.org, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: Re: [PATCH 1/1] ACPI: pci_irq, add PRT_ quirk for IBM Bartolo

On 06/28/2010 02:14 AM, Robert Hancock wrote:
> On 06/27/2010 03:21 PM, Jiri Slaby wrote:
>> On IBM Bartolo machines, cards in 00:09.0 are defunct (if use
>> interrupts). DSDT says that this slot (with function 0, i.e. pin A) is
>> routed to \_SB_.PCI0.PIB_.LNKB. But it's not, it's wired to LNKC, so
>> interrupts are misrouted. Add a quirk for this to workaround the
>> issue.
> 
> That seems a rather serious DSDT flaw. Do devices in that slot work in
> Windows?

Yes, the DSDT is pretty broken this way there. Regarding Windows, I
don't know and I doubt anybody will ever try.

regards,
-- 
js
suse labs
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