linux-kernel - [PATCH 4.9 44/87] s390/qeth: issue STARTLAN as first IPA command

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Message-Id: <20171113125619.423573214@linuxfoundation.org>
Date:   Mon, 13 Nov 2017 13:56:01 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Julian Wiedmann <jwi@...ux.vnet.ibm.com>,
        Thomas Richter <tmricht@...ux.vnet.ibm.com>,
        Ursula Braun <ubraun@...ux.vnet.ibm.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.9 44/87] s390/qeth: issue STARTLAN as first IPA command

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Julian Wiedmann <jwi@...ux.vnet.ibm.com>


[ Upstream commit 1034051045d125579ab1e8fcd5a724eeb0e70149 ]

STARTLAN needs to be the first IPA command after MPC initialization
completes.
So move the qeth_send_startlan() call from the layer disciplines
into the core path, right after the MPC handshake.
While at it, replace the magic LAN OFFLINE return code
with the existing enum.

Signed-off-by: Julian Wiedmann <jwi@...ux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@...ux.vnet.ibm.com>
Reviewed-by: Ursula Braun <ubraun@...ux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/s390/net/qeth_core.h      |    1 -
 drivers/s390/net/qeth_core_main.c |   21 +++++++++++++++++----
 drivers/s390/net/qeth_l2_main.c   |   15 ---------------
 drivers/s390/net/qeth_l3_main.c   |   15 ---------------
 4 files changed, 17 insertions(+), 35 deletions(-)

--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -921,7 +921,6 @@ void qeth_clear_thread_running_bit(struc
 int qeth_core_hardsetup_card(struct qeth_card *);
 void qeth_print_status_message(struct qeth_card *);
 int qeth_init_qdio_queues(struct qeth_card *);
-int qeth_send_startlan(struct qeth_card *);
 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
 		  int (*reply_cb)
 		  (struct qeth_card *, struct qeth_reply *, unsigned long),
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -2944,7 +2944,7 @@ int qeth_send_ipa_cmd(struct qeth_card *
 }
 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
 
-int qeth_send_startlan(struct qeth_card *card)
+static int qeth_send_startlan(struct qeth_card *card)
 {
 	int rc;
 	struct qeth_cmd_buffer *iob;
@@ -2957,7 +2957,6 @@ int qeth_send_startlan(struct qeth_card
 	rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 	return rc;
 }
-EXPORT_SYMBOL_GPL(qeth_send_startlan);
 
 static int qeth_default_setadapterparms_cb(struct qeth_card *card,
 		struct qeth_reply *reply, unsigned long data)
@@ -5091,6 +5090,20 @@ retriable:
 		goto out;
 	}
 
+	rc = qeth_send_startlan(card);
+	if (rc) {
+		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
+		if (rc == IPA_RC_LAN_OFFLINE) {
+			dev_warn(&card->gdev->dev,
+				"The LAN is offline\n");
+			card->lan_online = 0;
+		} else {
+			rc = -ENODEV;
+			goto out;
+		}
+	} else
+		card->lan_online = 1;
+
 	card->options.ipa4.supported_funcs = 0;
 	card->options.ipa6.supported_funcs = 0;
 	card->options.adp.supported_funcs = 0;
@@ -5102,14 +5115,14 @@ retriable:
 	if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 		rc = qeth_query_setadapterparms(card);
 		if (rc < 0) {
-			QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
+			QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
 			goto out;
 		}
 	}
 	if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
 		rc = qeth_query_setdiagass(card);
 		if (rc < 0) {
-			QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
+			QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
 			goto out;
 		}
 	}
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -1204,21 +1204,6 @@ static int __qeth_l2_set_online(struct c
 	/* softsetup */
 	QETH_DBF_TEXT(SETUP, 2, "softsetp");
 
-	rc = qeth_send_startlan(card);
-	if (rc) {
-		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
-		if (rc == 0xe080) {
-			dev_warn(&card->gdev->dev,
-				"The LAN is offline\n");
-			card->lan_online = 0;
-			goto contin;
-		}
-		rc = -ENODEV;
-		goto out_remove;
-	} else
-		card->lan_online = 1;
-
-contin:
 	if ((card->info.type == QETH_CARD_TYPE_OSD) ||
 	    (card->info.type == QETH_CARD_TYPE_OSX)) {
 		rc = qeth_l2_start_ipassists(card);
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -3230,21 +3230,6 @@ static int __qeth_l3_set_online(struct c
 	/* softsetup */
 	QETH_DBF_TEXT(SETUP, 2, "softsetp");
 
-	rc = qeth_send_startlan(card);
-	if (rc) {
-		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
-		if (rc == 0xe080) {
-			dev_warn(&card->gdev->dev,
-				"The LAN is offline\n");
-			card->lan_online = 0;
-			goto contin;
-		}
-		rc = -ENODEV;
-		goto out_remove;
-	} else
-		card->lan_online = 1;
-
-contin:
 	rc = qeth_l3_setadapter_parms(card);
 	if (rc)
 		QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);