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* [PATCH 0/5] Simplify code by using hotplug safe pci_get_domain_bus_and_slot()
@ 2012-08-28 15:43 Jiang Liu
  2012-08-28 15:43 ` [PATCH 1/5] PCI/IA64: simplify code by " Jiang Liu
                   ` (5 more replies)
  0 siblings, 6 replies; 19+ messages in thread
From: Jiang Liu @ 2012-08-28 15:43 UTC (permalink / raw)
  To: Bjorn Helgaas
  Cc: Jiang Liu, Don Dutile, Yinghai Lu, Kenji Kaneshige, Yijing Wang,
	linux-kernel, linux-pci

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


^ permalink raw reply	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2012-09-21 15:11 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-08-28 15:43 [PATCH 0/5] Simplify code by using hotplug safe pci_get_domain_bus_and_slot() Jiang Liu
2012-08-28 15:43 ` [PATCH 1/5] PCI/IA64: simplify code by " Jiang Liu
2012-08-28 15:43 ` [PATCH 2/5] PCI/vga: " Jiang Liu
2012-08-28 15:43 ` [PATCH 3/5] PCI/cpcihp: " Jiang Liu
2012-08-28 15:43 ` [PATCH 4/5] PCI/IOV: " Jiang Liu
2012-09-20 20:38   ` Yinghai Lu
2012-09-20 23:59     ` Bjorn Helgaas
2012-09-21  0:02       ` Jiang Liu
2012-09-21  1:51       ` Yinghai Lu
2012-09-21  2:56         ` Bjorn Helgaas
2012-09-21  6:22           ` Yinghai Lu
2012-09-21 14:15             ` Don Dutile
2012-09-21 15:11               ` Yinghai Lu
2012-08-28 15:43 ` [PATCH 5/5] PCI/xen-pcifront: " Jiang Liu
2012-08-28 16:59   ` Konrad Rzeszutek Wilk
2012-08-28 23:56     ` Jiang Liu
2012-09-05 16:29       ` Konrad Rzeszutek Wilk
2012-09-05 20:32   ` Konrad Rzeszutek Wilk
2012-09-17 19:34 ` [PATCH 0/5] Simplify code by using " Bjorn Helgaas

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