[Bugfix 0/3] Fix regressions in Xen IRQ management

[Jiang Liu <jiang.liu@linux.intel.com>]

Hi all,
	Sander reports an Xen pci-passthrough regression caused by
commit cffe0a2b5a34c95a4dadc9ec7132690a5b0f6687 ("x86, irq: Keep
balance of IOAPIC pin reference count"). This patch set tries to
fix it.

Patch 1 is a fix for another issue found during fixing the regression.
Patch 2 is a hotfix for the regression and should be targeted for v3.19.
Patch 3 is the foundamental fix for the regression and should be targeted
at v3.20.

Hi Sander,
	Could you please help to test by:
1) only apply patch 1 and patch 2
2) and then apply patch 3 ontop of patch 1/2.
Thanks!
Gerry

Jiang Liu (3):
  xen/irq, ACPI: Fix regression in xen PCI passthrough caused by
    cffe0a2b5a34
  xen/irq: Override ACPI IRQ management callback __acpi_unregister_gsi
  x86/PCI: Refine the way to release PCI IRQ resources

 arch/x86/include/asm/acpi.h    |    1 +
 arch/x86/include/asm/pci_x86.h |    2 --
 arch/x86/pci/common.c          |   30 ++++++++++++++++++++++++++++--
 arch/x86/pci/intel_mid_pci.c   |    4 ++--
 arch/x86/pci/irq.c             |   15 +--------------
 arch/x86/pci/xen.c             |    2 ++
 drivers/acpi/pci_irq.c         |   10 +---------
 7 files changed, 35 insertions(+), 29 deletions(-)

-- 
1.7.10.4