[PATCH 0/5] Simplify code by using hotplug safe pci_get_domain_bus_and_slot()

[Jiang Liu]

Following code has a race window between pci_find_bus() and pci_get_slot()
if PCI hotplug operation happens between them which removes the pci_bus.
So use PCI hotplug safe interface pci_get_domain_bus_and_slot() instead,
which also reduces code complexity.

struct pci_bus *pci_bus = pci_find_bus(domain, busno);
struct pci_dev *pci_dev = pci_get_slot(pci_bus, devfn);

Jiang Liu (5):
  PCI/IA64: simplify code by hotplug safe pci_get_domain_bus_and_slot()
  PCI/vga: simplify code by hotplug safe pci_get_domain_bus_and_slot()
  PCI/cpcihp: simplify code by hotplug safe
    pci_get_domain_bus_and_slot()
  PCI/IOV: simplify code by hotplug safe pci_get_domain_bus_and_slot()
  PCI/xen-pcifront: simplify code by hotplug safe
    pci_get_domain_bus_and_slot()

 arch/ia64/sn/kernel/io_common.c      |    4 +---
 drivers/gpu/vga/vgaarb.c             |   15 +++------------
 drivers/pci/hotplug/cpcihp_generic.c |    8 ++------
 drivers/pci/iov.c                    |    8 ++------
 drivers/pci/xen-pcifront.c           |   10 ++--------
 5 files changed, 10 insertions(+), 35 deletions(-)

-- 
1.7.9.5

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