linux-kernel - Re: 4.7 regression: ACPI: No IRQ available for PCI Interrupt Link [LNKD]. Try pci=noacpi or acpi=off

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Message-Id: <201609300844.24325.linux@rainbow-software.org>
Date:   Fri, 30 Sep 2016 08:44:23 +0200
From:   Ondrej Zary <linux@...nbow-software.org>
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-pci@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        wim@....tudelft.nl, ravikanth.nalla@....com
Subject: Re: 4.7 regression: ACPI: No IRQ available for PCI Interrupt Link [LNKD]. Try pci=noacpi or acpi=off

On Friday 30 September 2016, Sinan Kaya wrote:
> On 9/29/2016 2:00 PM, Ondrej Zary wrote:
> >> The previous two patches were in the right direction.
> >>
> >> > Can we also get the same output from 4.6 kernel with the attached
> >> > patch for the same machine you sent these?
> >
> > Here it is.
> >
> >> > Something about SCI still doesn't feel right.
> >> >
> >> > The IRQ assignment fails if the penalty is greater than
> >> > PIRQ_PENALTY_ISA_ALWAYS. This will happen if BIOS tells us to use an
> >> > IRQ and same IRQ is in use by the SCI.
>
> Thanks, I reverted penalize_sci function and dropped patch #1. Can you try
> this again?

It seems to work, at least on one machine.

-- 
Ondrej Zary

View attachment "dmesg-good.txt" of type "text/plain" (23909 bytes)