Merge branch 's390-qeth-fixes'

Julian Wiedmann says:

====================
s390/qeth: fixes 2019-09-26

please apply two qeth patches for -net. The first is a trivial cleanup
required for patch fail0verflow#2 by Jean, which fixes a potential endless loop.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

Author: davem330

drivers/s390/net/qeth_core_main.c

@@ -610,7 +610,7 @@ static void qeth_put_reply(struct qeth_reply *reply)
 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 		struct qeth_card *card)
 {
-	char *ipa_name;
+	const char *ipa_name;
 	int com = cmd->hdr.command;
 	ipa_name = qeth_get_ipa_cmd_name(com);
 	if (rc)

drivers/s390/net/qeth_core_mpc.c

@@ -148,10 +148,10 @@ EXPORT_SYMBOL_GPL(IPA_PDU_HEADER);
 
 struct ipa_rc_msg {
 	enum qeth_ipa_return_codes rc;
-	char *msg;
+	const char *msg;
 };
 
-static struct ipa_rc_msg qeth_ipa_rc_msg[] = {
+static const struct ipa_rc_msg qeth_ipa_rc_msg[] = {
 	{IPA_RC_SUCCESS,		"success"},
 	{IPA_RC_NOTSUPP,		"Command not supported"},
 	{IPA_RC_IP_TABLE_FULL,		"Add Addr IP Table Full - ipv6"},
@@ -219,23 +219,23 @@ static struct ipa_rc_msg qeth_ipa_rc_msg[] = {
 
 
 
-char *qeth_get_ipa_msg(enum qeth_ipa_return_codes rc)
+const char *qeth_get_ipa_msg(enum qeth_ipa_return_codes rc)
 {
-	int x = 0;
-	qeth_ipa_rc_msg[sizeof(qeth_ipa_rc_msg) /
-			sizeof(struct ipa_rc_msg) - 1].rc = rc;
-	while (qeth_ipa_rc_msg[x].rc != rc)
-		x++;
+	int x;
+
+	for (x = 0; x < ARRAY_SIZE(qeth_ipa_rc_msg) - 1; x++)
+		if (qeth_ipa_rc_msg[x].rc == rc)
+			return qeth_ipa_rc_msg[x].msg;
 	return qeth_ipa_rc_msg[x].msg;
 }
 
 
 struct ipa_cmd_names {
 	enum qeth_ipa_cmds cmd;
-	char *name;
+	const char *name;
 };
 
-static struct ipa_cmd_names qeth_ipa_cmd_names[] = {
+static const struct ipa_cmd_names qeth_ipa_cmd_names[] = {
 	{IPA_CMD_STARTLAN,	"startlan"},
 	{IPA_CMD_STOPLAN,	"stoplan"},
 	{IPA_CMD_SETVMAC,	"setvmac"},
@@ -267,13 +267,12 @@ static struct ipa_cmd_names qeth_ipa_cmd_names[] = {
 	{IPA_CMD_UNKNOWN,	"unknown"},
 };
 
-char *qeth_get_ipa_cmd_name(enum qeth_ipa_cmds cmd)
+const char *qeth_get_ipa_cmd_name(enum qeth_ipa_cmds cmd)
 {
-	int x = 0;
-	qeth_ipa_cmd_names[
-		sizeof(qeth_ipa_cmd_names) /
-			sizeof(struct ipa_cmd_names)-1].cmd = cmd;
-	while (qeth_ipa_cmd_names[x].cmd != cmd)
-		x++;
+	int x;
+
+	for (x = 0; x < ARRAY_SIZE(qeth_ipa_cmd_names) - 1; x++)
+		if (qeth_ipa_cmd_names[x].cmd == cmd)
+			return qeth_ipa_cmd_names[x].name;
 	return qeth_ipa_cmd_names[x].name;
 }

drivers/s390/net/qeth_core_mpc.h

@@ -797,8 +797,8 @@ enum qeth_ipa_arp_return_codes {
 	QETH_IPA_ARP_RC_Q_NO_DATA    = 0x0008,
 };
 
-extern char *qeth_get_ipa_msg(enum qeth_ipa_return_codes rc);
-extern char *qeth_get_ipa_cmd_name(enum qeth_ipa_cmds cmd);
+extern const char *qeth_get_ipa_msg(enum qeth_ipa_return_codes rc);
+extern const char *qeth_get_ipa_cmd_name(enum qeth_ipa_cmds cmd);
 
 #define QETH_SETASS_BASE_LEN (sizeof(struct qeth_ipacmd_hdr) + \
 			       sizeof(struct qeth_ipacmd_setassparms_hdr))