diff options
| author | Greg Rose <gregory.v.rose@intel.com> | 2012-02-02 23:51:43 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-20 12:46:13 -0800 |
| commit | 3039fb27d54ba3ffa564c56ef25d799e756ca3ad (patch) | |
| tree | 562f07330d0be5444158084e97603589f51565e9 | |
| parent | ec00c9c49aef783ec75155431d43df4cd93e24a4 (diff) | |
| download | lwn-3039fb27d54ba3ffa564c56ef25d799e756ca3ad.tar.gz lwn-3039fb27d54ba3ffa564c56ef25d799e756ca3ad.zip | |
igb: fix vf lookup
commit 0629292117572a60465f38cdedde2f8164c3df0b upstream.
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 is applicable to 3.2+ kernels.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index ced544499f1b..222954dcdee9 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -4965,7 +4965,8 @@ static int igb_find_enabled_vfs(struct igb_adapter *adapter) vf_devfn = pdev->devfn + 0x80; pvfdev = pci_get_device(hw->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 += vf_stride; pvfdev = pci_get_device(hw->vendor_id, |