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authorYu Zhao <yu.zhao@intel.com>2009-05-20 17:11:57 +0800
committerJesse Barnes <jbarnes@virtuousgeek.org>2009-06-11 12:04:20 -0700
commit4d135dbee7b0a89e946f7ba284f2b957505a2c3a (patch)
tree332fb82ad8721cd1c3b8f0260971b2389f76ad5a
parentaf4c5f985afd8d4cfdf402aaa03677f2cb96e37c (diff)
PCI: fix SR-IOV function dependency link problem
PCIe root complex integrated endpoint does not implement ARI, so this kind of endpoint uses 3-bit function number. The function dependency link of the integrated endpoint should be calculated using the device number plus the value from function dependency link register. Normal endpoint always implements ARI and the function dependency link register contains 8-bit function number (i.e. `devfn' from software's perspective). Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
-rw-r--r--drivers/pci/iov.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index b497daab3d4..e87fe95da81 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -487,6 +487,8 @@ found:
iov->self = dev;
pci_read_config_dword(dev, pos + PCI_SRIOV_CAP, &iov->cap);
pci_read_config_byte(dev, pos + PCI_SRIOV_FUNC_LINK, &iov->link);
+ if (dev->pcie_type == PCI_EXP_TYPE_RC_END)
+ iov->link = PCI_DEVFN(PCI_SLOT(dev->devfn), iov->link);
if (pdev)
iov->dev = pci_dev_get(pdev);