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

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Message-ID: <20160218160319.GC17588@localhost>
Date:	Thu, 18 Feb 2016 10:03:19 -0600
From:	Bjorn Helgaas <helgaas@...nel.org>
To:	Мороз Олег <oleg.moroz@....vniiem.ru>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>, linux-pci@...r.kernel.org,
	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: Re: [PATCH v2 0/3] PCI: Revert "Implement pcibios_alloc_irq() and
 pcibios_free_irq()"

On Thu, Feb 18, 2016 at 08:13:41AM +0300, Мороз Олег wrote:
> On 17.02.2016 21:36, Bjorn Helgaas wrote:
> >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(-)
> As i undestand this patch will appear in kernel git repo tomorrow? I
> don't need to apply in manyally to v4.5-rc1?

These are included in the next-20160218 tag in the linux-next git repo (not
Linus' repo) at:

  git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git

You browse this at:

  https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/

If you'd rather, you can also apply the patches yourself to v4.5-rc1.

Bjorn