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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