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| author | Jiang Liu <liuj97@gmail.com> | 2013-05-25 21:48:29 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-05-27 16:22:09 -0600 |
| commit | fe830ef62ac6d8814e27b7e2f632848694b0e5c7 (patch) | |
| tree | 7a75eef662b6186781efb11566f3a7aa01a7cc60 /drivers/pci | |
| parent | f722406faae2d073cc1d01063d1123c35425939e (diff) | |
| download | linux-fe830ef62ac6d8814e27b7e2f632848694b0e5c7.tar.gz linux-fe830ef62ac6d8814e27b7e2f632848694b0e5c7.tar.xz | |
PCI: Introduce pci_bus_{get|put}() to manage PCI bus reference count
Introduce helper functions pci_bus_{get|put}() to manage PCI bus
reference count.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/bus.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 32e66a6f12d9..b1ff02ab4f13 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -283,6 +283,21 @@ void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), } EXPORT_SYMBOL_GPL(pci_walk_bus); +struct pci_bus *pci_bus_get(struct pci_bus *bus) +{ + if (bus) + get_device(&bus->dev); + return bus; +} +EXPORT_SYMBOL(pci_bus_get); + +void pci_bus_put(struct pci_bus *bus) +{ + if (bus) + put_device(&bus->dev); +} +EXPORT_SYMBOL(pci_bus_put); + EXPORT_SYMBOL(pci_bus_alloc_resource); EXPORT_SYMBOL_GPL(pci_bus_add_device); EXPORT_SYMBOL(pci_bus_add_devices); |