Messages in this thread Patch in this message |  | | Date | Tue, 08 Jan 2013 14:32:57 +0000 | From | tadeusz.struk@intel ... | Subject | [PATCH] PCI: Make pci_find_upstream_pcie_bridge() handle non PCIE VFs well |
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pci_find_upstream_pcie_bridge() doesn't handle well non PCIE VFs that are part of a PCIE PF device.
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> --- drivers/pci/search.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/search.c b/drivers/pci/search.c index bf969ba..8ecdab2 100644 --- a/drivers/pci/search.c +++ b/drivers/pci/search.c @@ -23,6 +23,8 @@ EXPORT_SYMBOL_GPL(pci_bus_sem); * 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 + * if the device is a VF that doesn't have PCIe cap, + * but the PF is a PCIE, return NULL */ struct pci_dev * pci_find_upstream_pcie_bridge(struct pci_dev *pdev) @@ -31,6 +33,10 @@ pci_find_upstream_pcie_bridge(struct pci_dev *pdev) if (pci_is_pcie(pdev)) return NULL; + + if (pdev->is_virtfn && pci_is_pcie(pdev->physfn)) + return NULL; + while (1) { if (pci_is_root_bus(pdev->bus)) break; -- 1.7.7
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