qeth: meaningful return code for set_mac_address

Setting an invalid mac-address for a qeth layer2 device returns
with a strange error code:
# ip link set hsi1 address 00:00:00:00:00:01
   RTNETLINK answers: Unknown error 18446744073709486085
Problem is caused by wrong usage of the return_code field within
structure qeth_ipa_cmd.
With this patch the ip command above returns
   SIOCSIFHWADDR: Invalid argument

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 7 insertions, 7 deletions

diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index ef17d8366ce..120955c6641 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -2945,8 +2945,8 @@ static int qeth_query_ipassists_cb(struct qeth_card *card,
                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
         }
         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
-        QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
-        QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
+        QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported);
+        QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled);
         return 0;
 }
 
@@ -4322,7 +4322,7 @@ static int qeth_snmp_command_cb(struct qeth_card *card,
         /* check if there is enough room in userspace */
         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
-                cmd->hdr.return_code = -ENOMEM;
+                cmd->hdr.return_code = IPA_RC_ENOMEM;
                 return 0;
         }
         QETH_CARD_TEXT_(card, 4, "snore%i",
diff --git a/drivers/s390/net/qeth_core_mpc.c b/drivers/s390/net/qeth_core_mpc.c
index ec24901c802..7fab6544def 100644
--- a/drivers/s390/net/qeth_core_mpc.c
+++ b/drivers/s390/net/qeth_core_mpc.c
@@ -207,6 +207,7 @@ static struct ipa_rc_msg qeth_ipa_rc_msg[] = {
         {IPA_RC_MC_ADDR_ALREADY_DEFINED, "Multicast address already defined"},
         {IPA_RC_LAN_OFFLINE,            "STRTLAN_LAN_DISABLED - LAN offline"},
         {IPA_RC_INVALID_IP_VERSION2,    "Invalid IP version"},
+        {IPA_RC_ENOMEM,                 "Memory problem"},
         {IPA_RC_FFFF,                   "Unknown Error"}
 };
 
diff --git a/drivers/s390/net/qeth_core_mpc.h b/drivers/s390/net/qeth_core_mpc.h
index 578e19a2de6..ff41e42004a 100644
--- a/drivers/s390/net/qeth_core_mpc.h
+++ b/drivers/s390/net/qeth_core_mpc.h
@@ -190,6 +190,7 @@ enum qeth_ipa_return_codes {
         IPA_RC_MC_ADDR_ALREADY_DEFINED  = 0xe013,
         IPA_RC_LAN_OFFLINE              = 0xe080,
         IPA_RC_INVALID_IP_VERSION2      = 0xf001,
+        IPA_RC_ENOMEM                   = 0xfffe,
         IPA_RC_FFFF                     = 0xffff
 };
 /* for DELIP */
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index e5c9cf15e5c..0e7c29d1d7e 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -576,7 +576,6 @@ static int qeth_l2_send_setmac_cb(struct qeth_card *card,
                 default:
                         break;
                 }
-                cmd->hdr.return_code = -EIO;
         } else {
                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
                 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
@@ -605,7 +604,6 @@ static int qeth_l2_send_delmac_cb(struct qeth_card *card,
         cmd = (struct qeth_ipa_cmd *) data;
         if (cmd->hdr.return_code) {
                 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
-                cmd->hdr.return_code = -EIO;
                 return 0;
         }
         card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
@@ -682,7 +680,7 @@ static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
         rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
         if (!rc)
                 rc = qeth_l2_send_setmac(card, addr->sa_data);
-        return rc;
+        return rc ? -EINVAL : 0;
 }
 
 static void qeth_l2_set_multicast_list(struct net_device *dev)
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 73bf8889984..f8592160768 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -2430,7 +2430,7 @@ static int qeth_l3_arp_query_cb(struct qeth_card *card,
 
                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
-                        cmd->hdr.return_code = -ENOMEM;
+                        cmd->hdr.return_code = IPA_RC_ENOMEM;
                         goto out_error;
                 }