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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Date:   Thu, 29 Sep 2016 18:39:48 -0400
From:   Sinan Kaya <okaya@...eaurora.org>
To:     Ondrej Zary <linux@...nbow-software.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 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?


-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.

View attachment "0001-ACPI-PCI-IRQ-add-PCI_USING-penalty-for-ISA-interrupt.patch" of type "text/plain" (1304 bytes)

View attachment "0002-Revert-ACPI-PCI-IRQ-remove-SCI-penalize-function.patch" of type "text/plain" (3392 bytes)