s390/qeth: consolidate errno translation

Consolidate errno handling for MAC management: Instead of doing this in every
caller, do it in one place.
Signed-off-by: NJulian Wiedmann <jwi@linux.vnet.ibm.com>
Reviewed-by: NThomas Richter <tmricht@linux.vnet.ibm.com>
Suggested-by: NUrsula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/s390/net/qeth_l2_main.c

@@ -170,8 +170,7 @@ static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
 	int rc;
 
 	QETH_CARD_TEXT(card, 2, "L2Sgmac");
-	rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
-					IPA_CMD_SETGMAC));
+	rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC);
 	if (rc == -EEXIST)
 		QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
 			mac, QETH_CARD_IFNAME(card));
@@ -186,8 +185,7 @@ static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
 	int rc;
 
 	QETH_CARD_TEXT(card, 2, "L2Dgmac");
-	rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
-					IPA_CMD_DELGMAC));
+	rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC);
 	if (rc)
 		QETH_DBF_MESSAGE(2,
 			"Could not delete group MAC %pM on %s: %d\n",
@@ -206,9 +204,8 @@ static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
 	int rc;
 
 	if (mac->is_uc) {
-		rc = qeth_setdel_makerc(card,
-				qeth_l2_send_setdelmac(card, mac->mac_addr,
-						IPA_CMD_SETVMAC));
+		rc = qeth_l2_send_setdelmac(card, mac->mac_addr,
+						IPA_CMD_SETVMAC);
 	} else {
 		rc = qeth_l2_send_setgroupmac(card, mac->mac_addr);
 	}
@@ -582,7 +579,8 @@ static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
 	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 	cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
 	memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
-	return qeth_send_ipa_cmd(card, iob, NULL, NULL);
+	return qeth_setdel_makerc(card, qeth_send_ipa_cmd(card, iob,
+					NULL, NULL));
 }
 
 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
@@ -590,8 +588,7 @@ static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
 	int rc;
 
 	QETH_CARD_TEXT(card, 2, "L2Setmac");
-	rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
-					IPA_CMD_SETVMAC));
+	rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
 	if (rc == 0) {
 		card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 		memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
@@ -621,8 +618,7 @@ static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
 	QETH_CARD_TEXT(card, 2, "L2Delmac");
 	if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 		return 0;
-	rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
-					IPA_CMD_DELVMAC));
+	rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC);
 	if (rc == 0)
 		card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 	return rc;