From: Jiang Liu <liuj97@gmail.com>
Date: Tue, 28 Aug 2012 15:43:57 +0000 (+0800)
Subject: PCI: Use hotplug-safe pci_get_domain_bus_and_slot()
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~79^2~6^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=433efd2247b0cbf5e7e86275e1f21281d3b99047;p=pandora-kernel.git

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>
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