PCI/cpcihp: Use hotplug-safe pci_get_domain_bus_and_slot()
authorJiang Liu <liuj97@gmail.com>
Tue, 28 Aug 2012 15:43:56 +0000 (23:43 +0800)
committerBjorn Helgaas <bhelgaas@google.com>
Wed, 12 Sep 2012 20:13:59 +0000 (14:13 -0600)
commita9d18b37e408b10854e15a918849194a4e089001
tree45d1c01dcf4eddb4787f5acd03802bf7df6a8620
parentf85567c89e2500d4ce4ca2702025a47fac684f21
PCI/cpcihp: Use hotplug-safe pci_get_domain_bus_and_slot()

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);

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
drivers/pci/hotplug/cpcihp_generic.c