1 files changed, 17 insertions, 19 deletions

diff --git a/drivers/net/ethernet/sfc/ef10_sriov.c b/drivers/net/ethernet/sfc/ef10_sriov.c
index 21fa6c0e8873..752d6406f07e 100644
--- a/drivers/net/ethernet/sfc/ef10_sriov.c
+++ b/drivers/net/ethernet/sfc/ef10_sriov.c
@@ -122,8 +122,7 @@ static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx)
 		struct ef10_vf *vf = nic_data->vf + i;
 
 		/* If VF is assigned, do not free the vport  */
-		if (vf->pci_dev &&
-		    vf->pci_dev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
+		if (vf->pci_dev && pci_is_dev_assigned(vf->pci_dev))
 			continue;
 
 		if (vf->vport_assigned) {
@@ -207,9 +206,7 @@ static int efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic *efx)
 
 	return 0;
 fail:
-	efx_ef10_sriov_free_vf_vports(efx);
-	kfree(nic_data->vf);
-	nic_data->vf = NULL;
+	efx_ef10_sriov_free_vf_vswitching(efx);
 	return rc;
 }
 
@@ -402,12 +399,17 @@ fail1:
 	return rc;
 }
 
+/* Disable SRIOV and remove VFs
+ * If some VFs are attached to a guest (using Xen, only) nothing is
+ * done if force=false, and vports are freed if force=true (for the non
+ * attachedc ones, only) but SRIOV is not disabled and VFs are not
+ * removed in either case.
+ */
 static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force)
 {
 	struct pci_dev *dev = efx->pci_dev;
-	unsigned int vfs_assigned = 0;
-
-	vfs_assigned = pci_vfs_assigned(dev);
+	unsigned int vfs_assigned = pci_vfs_assigned(dev);
+	int rc = 0;
 
 	if (vfs_assigned && !force) {
 		netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; "
@@ -417,10 +419,12 @@ static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force)
 
 	if (!vfs_assigned)
 		pci_disable_sriov(dev);
+	else
+		rc = -EBUSY;
 
 	efx_ef10_sriov_free_vf_vswitching(efx);
 	efx->vf_count = 0;
-	return 0;
+	return rc;
 }
 
 int efx_ef10_sriov_configure(struct efx_nic *efx, int num_vfs)
@@ -439,24 +443,18 @@ int efx_ef10_sriov_init(struct efx_nic *efx)
 void efx_ef10_sriov_fini(struct efx_nic *efx)
 {
 	struct efx_ef10_nic_data *nic_data = efx->nic_data;
-	unsigned int i;
 	int rc;
 
 	if (!nic_data->vf) {
-		/* Remove any un-assigned orphaned VFs */
+		/* Remove any un-assigned orphaned VFs. This can happen if the PF driver
+		 * was unloaded while any VF was assigned to a guest (using Xen, only).
+		 */
 		if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev))
 			pci_disable_sriov(efx->pci_dev);
 		return;
 	}
 
-	/* Remove any VFs in the host */
-	for (i = 0; i < efx->vf_count; ++i) {
-		struct efx_nic *vf_efx = nic_data->vf[i].efx;
-
-		if (vf_efx)
-			vf_efx->pci_dev->driver->remove(vf_efx->pci_dev);
-	}
-
+	/* Disable SRIOV and remove any VFs in the host */
 	rc = efx_ef10_pci_sriov_disable(efx, true);
 	if (rc)
 		netif_dbg(efx, drv, efx->net_dev,