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authorGreg Rose <gregory.v.rose@intel.com>2012-02-03 00:54:13 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2012-02-09 01:25:42 -0800
commita4b08329c74985e5cc3a44b6d2b2c59444ed8079 (patch)
tree21249e7c96cfc7e294ad0611e01e0d8f682ac986
parent0629292117572a60465f38cdedde2f8164c3df0b (diff)
ixgbe: fix vf lookup
Recent addition of code to find already allocated VFs failed to take account that systems with 2 or more multi-port SR-IOV capable controllers might have already enabled VFs. Make sure that the VFs the function is finding are actually subordinate to the particular instance of the adapter that is looking for them and not subordinate to some device that has previously enabled SR-IOV. This bug exists in 3.2 stable as well as 3.3 release candidates. CC: stable@vger.kernel.org Reported-by: David Ahern <daahern@cisco.com> Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Tested-by: Robert E Garrett <robertX.e.garrett@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index 8d8cdbc22df0..b01ecb4d2bb1 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -67,7 +67,8 @@ static int ixgbe_find_enabled_vfs(struct ixgbe_adapter *adapter)
vf_devfn = pdev->devfn + 0x80;
pvfdev = pci_get_device(IXGBE_INTEL_VENDOR_ID, device_id, NULL);
while (pvfdev) {
- if (pvfdev->devfn == vf_devfn)
+ if (pvfdev->devfn == vf_devfn &&
+ (pvfdev->bus->number >= pdev->bus->number))
vfs_found++;
vf_devfn += 2;
pvfdev = pci_get_device(IXGBE_INTEL_VENDOR_ID,