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| author | Ingo Molnar <mingo@elte.hu> | 2011-07-07 12:56:44 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-07-07 12:58:28 +0200 |
| commit | b395fb36d59e17b9335805c10fa30fc51c8a94c6 (patch) | |
| tree | b96bc8eee33753e2a1b1181c62a028d7f89643d7 /include/linux/pci.h | |
| parent | fe0d42203cb5616eeff68b14576a0f7e2dd56625 (diff) | |
| parent | 6b385b46ee17d7e1a68d3411b8cdb2342e0f0445 (diff) | |
Merge branch 'iommu-3.1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu into core/iommu
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index c446b5ca2d3..970bfe0941c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1589,5 +1589,16 @@ int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, unsigned int len, const char *kw); +/** + * pci_find_upstream_pcie_bridge - find upstream PCIe-to-PCI bridge of a device + * @pdev: the PCI device + * + * if the device is PCIE, return NULL + * if the device isn't connected to a PCIe bridge (that is its parent is a + * legacy PCI bridge and the bridge is directly connected to bus 0), return its + * parent + */ +struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); + #endif /* __KERNEL__ */ #endif /* LINUX_PCI_H */ |