Messages in this thread Patch in this message | | | Subject | [PATCH v4 15/16] PCI: Remove pci_find_upstream_pcie_bridge() | From | Alex Williamson <> | Date | Thu, 22 May 2014 17:08:58 -0600 |
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It's broken and has no users.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com> --- drivers/pci/search.c | 35 ----------------------------------- include/linux/pci.h | 11 ----------- 2 files changed, 46 deletions(-)
diff --git a/drivers/pci/search.c b/drivers/pci/search.c index df38f73..b8e65c2 100644 --- a/drivers/pci/search.c +++ b/drivers/pci/search.c @@ -104,41 +104,6 @@ int pci_for_each_dma_alias(struct pci_dev *pdev, return ret; } -/* - * find the upstream PCIe-to-PCI bridge of a 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) -{ - struct pci_dev *tmp = NULL; - - if (pci_is_pcie(pdev)) - return NULL; - while (1) { - if (pci_is_root_bus(pdev->bus)) - break; - pdev = pdev->bus->self; - /* a p2p bridge */ - if (!pci_is_pcie(pdev)) { - tmp = pdev; - continue; - } - /* PCI device should connect to a PCIe bridge */ - if (pci_pcie_type(pdev) != PCI_EXP_TYPE_PCI_BRIDGE) { - /* Busted hardware? */ - WARN_ON_ONCE(1); - return NULL; - } - return pdev; - } - - return tmp; -} - static struct pci_bus *pci_do_find_bus(struct pci_bus *bus, unsigned char busnr) { struct pci_bus *child; diff --git a/include/linux/pci.h b/include/linux/pci.h index 85ab35e..903c7d6 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1804,15 +1804,4 @@ int pci_for_each_dma_alias(struct pci_dev *pdev, int (*fn)(struct pci_dev *pdev, u16 alias, void *data), void *data); -/** - * 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 /* LINUX_PCI_H */
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