sfc: Downgrade or remove some error messages

Depending on configuration the NIC may return errors for unprivileged
functions and/or VFs. Where these are expected and handled, reduce the
level of any output.
Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/sfc/ef10.c

@@ -486,10 +486,17 @@ static int efx_ef10_alloc_piobufs(struct efx_nic *efx, unsigned int n)
 	BUILD_BUG_ON(MC_CMD_ALLOC_PIOBUF_IN_LEN != 0);
 
 	for (i = 0; i < n; i++) {
-		rc = efx_mcdi_rpc(efx, MC_CMD_ALLOC_PIOBUF, NULL, 0,
+		rc = efx_mcdi_rpc_quiet(efx, MC_CMD_ALLOC_PIOBUF, NULL, 0,
 					outbuf, sizeof(outbuf), &outlen);
-		if (rc)
+		if (rc) {
+			/* Don't display the MC error if we didn't have space
+			 * for a VF.
+			 */
+			if (!(efx_ef10_is_vf(efx) && rc == -ENOSPC))
+				efx_mcdi_display_error(efx, MC_CMD_ALLOC_PIOBUF,
+						       0, outbuf, outlen, rc);
 			break;
+		}
 		if (outlen < MC_CMD_ALLOC_PIOBUF_OUT_LEN) {
 			rc = -EIO;
 			break;
@@ -4028,7 +4035,8 @@ static int efx_ef10_filter_insert_def(struct efx_nic *efx, bool multicast,
 
 	rc = efx_ef10_filter_insert(efx, &spec, true);
 	if (rc < 0) {
-		netif_warn(efx, drv, efx->net_dev,
+		netif_printk(efx, drv, rc == -EPERM ? KERN_DEBUG : KERN_WARNING,
+			     efx->net_dev,
 			     "%scast mismatch filter insert failed rc=%d\n",
 			     multicast ? "Multi" : "Uni", rc);
 	} else if (multicast) {

drivers/net/ethernet/sfc/efx.c

@@ -3174,14 +3174,15 @@ static int efx_pci_probe(struct pci_dev *pci_dev,
 	rtnl_lock();
 	rc = efx_mtd_probe(efx);
 	rtnl_unlock();
-	if (rc)
+	if (rc && rc != -EPERM)
 		netif_warn(efx, probe, efx->net_dev,
 			   "failed to create MTDs (%d)\n", rc);
 
 	rc = pci_enable_pcie_error_reporting(pci_dev);
 	if (rc && rc != -EINVAL)
-		netif_warn(efx, probe, efx->net_dev,
-			   "pci_enable_pcie_error_reporting failed (%d)\n", rc);
+		netif_notice(efx, probe, efx->net_dev,
+			     "PCIE error reporting unavailable (%d).\n",
+			     rc);
 
 	return 0;