linux-kernel - [PATCH v2 0/3] PCI: Revert "Implement pcibios_alloc_irq() and pcibios_free

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Message-ID: <20160217182718.302.10272.stgit@bhelgaas-glaptop2.roam.corp.google.com>
Date:	Wed, 17 Feb 2016 12:36:57 -0600
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	linux-pci@...r.kernel.org
Cc:	ОлегМороз 
	<oleg.moroz@....vniiem.ru>, Joerg Roedel <jroedel@...e.de>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	linux-kernel@...r.kernel.org, Sunjin Yang <fan4326@...il.com>,
	linux-acpi@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Yinghai Lu <yinghai@...nel.org>,
	Jiang Liu <jiang.liu@...ux.intel.com>
Subject: [PATCH v2 0/3] PCI: Revert "Implement pcibios_alloc_irq() and
 pcibios_free_irq()"

These are clean reverts of 991de2e59090 ("PCI, x86: Implement
pcibios_alloc_irq() and pcibios_free_irq()") and related changes.

We have two reports of drivers broken in v4.3 by Jiang's change,
991de2e59090 ("PCI, x86: Implement pcibios_alloc_irq() and
pcibios_free_irq()").

It would be best to fix the problem instead of reverting 991de2e59090, but
I don't have time to do that myself, and we haven't heard from Jiang, so
the only choice I have is to revert the commit.

Note that reverting will likely break IOAPIC hotplug.

Олег and Sunjin, can you please test this and see whether it fixes your
drivers?  This patch is based on v4.5-rc1.

I intend to merge these for v4.5 unless I hear objections.

They're on my for-linus branch, so they should appear in linux-next
tomorrow.

Changes from the v1 posting:
  - Explicitly revert related patches instead of resolving conflicts
    manually
---

Bjorn Helgaas (3):
      Revert "x86/PCI: Don't alloc pcibios-irq when MSI is enabled"
      Revert "PCI: Add helpers to manage pci_dev->irq and pci_dev->irq_managed"
      Revert "PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()"

 arch/x86/include/asm/pci_x86.h |    2 ++
 arch/x86/pci/common.c          |   26 ++++++++++----------------
 arch/x86/pci/intel_mid_pci.c   |    9 +++------
 arch/x86/pci/irq.c             |   23 +++++++++++++++++++----
 drivers/acpi/pci_irq.c         |   17 +++++++++++++----
 include/linux/pci.h            |   17 -----------------
 6 files changed, 47 insertions(+), 47 deletions(-)