From f7928589569f71241b9d9ad63d043796c67f6616 Mon Sep 17 00:00:00 2001 From: Greg Rose Date: Thu, 2 Feb 2012 23:51:43 +0000 Subject: [PATCH] igb: 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 is applicable to 3.2+ kernels. CC: stable@vger.kernel.org Reported-by: David Ahern Signed-off-by: Greg Rose Tested-by: Robert E Garrett Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index e91d73c8aa4e3..94be6c32fa7d9 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -5012,7 +5012,8 @@ 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, -- 2.39.5