ia64/PCI: Use hotplug-safe pci_get_domain_bus_and_slot()
authorJiang Liu <liuj97@gmail.com>
Tue, 28 Aug 2012 15:43:54 +0000 (23:43 +0800)
committerBjorn Helgaas <bhelgaas@google.com>
Wed, 12 Sep 2012 20:10:33 +0000 (14:10 -0600)
commitddec11b1452599a006660e160b8a2b707bb0a276
tree88b0985e2dc7b042b8ca449684aaf136ddd7352b
parent0d7614f09c1ebdbaa1599a5aba7593f147bf96ee
ia64/PCI: 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>
arch/ia64/sn/kernel/io_common.c