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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 /drivers/pci/iov.c
parentaf4c5f985afd8d4cfdf402aaa03677f2cb96e37c (diff)
downloadop-kernel-dev-4d135dbee7b0a89e946f7ba284f2b957505a2c3a.zip
op-kernel-dev-4d135dbee7b0a89e946f7ba284f2b957505a2c3a.tar.gz
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>
Diffstat (limited to 'drivers/pci/iov.c')
-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 b497daa..e87fe95 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);
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