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.st...@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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