diff options
| author | Gu Zheng <guz.fnst@cn.fujitsu.com> | 2013-05-25 17:48:30 +0400 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-05-28 02:23:28 +0400 |
| commit | 3c6e6ae770f338ef3e54c5823c21063204f53537 (patch) | |
| tree | 7460a7cdf07d4e2a734b9c39706b34ab85b6e05f /include/linux/pci.h | |
| parent | fe830ef62ac6d8814e27b7e2f632848694b0e5c7 (diff) | |
| download | linux-3c6e6ae770f338ef3e54c5823c21063204f53537.tar.xz | |
PCI: Introduce pci_alloc_dev(struct pci_bus*) to replace alloc_pci_dev()
Here we introduce a new interface to replace alloc_pci_dev():
struct pci_dev *pci_alloc_dev(struct pci_bus *bus)
It takes a "struct pci_bus *" argument, so we can alloc a PCI device
on a target PCI bus, and it acquires a reference on the pci_bus.
We use pci_alloc_dev(NULL) to simplify the old alloc_pci_dev(),
and keep it for a while but mark it as __deprecated.
Holding a reference to the pci_bus ensures that referencing
pci_dev->bus is valid as long as the pci_dev is valid.
[bhelgaas: keep existing "return error early" structure in pci_alloc_dev()]
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 7556c590ddfd..b0f4a8264118 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -364,7 +364,8 @@ static inline struct pci_dev *pci_physfn(struct pci_dev *dev) return dev; } -struct pci_dev *alloc_pci_dev(void); +struct pci_dev *pci_alloc_dev(struct pci_bus *bus); +struct pci_dev * __deprecated alloc_pci_dev(void); #define to_pci_dev(n) container_of(n, struct pci_dev, dev) #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) |