igb: Use pci_vfs_assigned instead of igb_vfs_are_assigned

This change makes it so that the igb driver uses the generic helper
pci_vfs_assigned instead of the igb specific function igb_vfs_are_assigned.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/igb/igb_main.c

@@ -180,7 +180,6 @@ static void igb_check_vf_rate_limit(struct igb_adapter *);
 
 #ifdef CONFIG_PCI_IOV
 static int igb_vf_configure(struct igb_adapter *adapter, int vf);
-static bool igb_vfs_are_assigned(struct igb_adapter *adapter);
 #endif
 
 #ifdef CONFIG_PM
@@ -2402,7 +2401,7 @@ static int  igb_disable_sriov(struct pci_dev *pdev)
 	/* reclaim resources allocated to VFs */
 	if (adapter->vf_data) {
 		/* disable iov and allow time for transactions to clear */
-		if (igb_vfs_are_assigned(adapter)) {
+		if (pci_vfs_assigned(pdev)) {
 			dev_warn(&pdev->dev,
 				 "Cannot deallocate SR-IOV virtual functions while they are assigned - VFs will not be deallocated\n");
 			return -EPERM;
@@ -5242,39 +5241,6 @@ static int igb_vf_configure(struct igb_adapter *adapter, int vf)
 	return 0;
 }
 
-static bool igb_vfs_are_assigned(struct igb_adapter *adapter)
-{
-	struct pci_dev *pdev = adapter->pdev;
-	struct pci_dev *vfdev;
-	int dev_id;
-
-	switch (adapter->hw.mac.type) {
-	case e1000_82576:
-		dev_id = IGB_82576_VF_DEV_ID;
-		break;
-	case e1000_i350:
-		dev_id = IGB_I350_VF_DEV_ID;
-		break;
-	default:
-		return false;
-	}
-
-	/* loop through all the VFs to see if we own any that are assigned */
-	vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, NULL);
-	while (vfdev) {
-		/* if we don't own it we don't care */
-		if (vfdev->is_virtfn && vfdev->physfn == pdev) {
-			/* if it is assigned we cannot release it */
-			if (vfdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
-				return true;
-		}
-
-		vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, dev_id, vfdev);
-	}
-
-	return false;
-}
-
 #endif
 static void igb_ping_all_vfs(struct igb_adapter *adapter)
 {