diff --git a/drivers/s390/net/Kconfig b/drivers/s390/net/Kconfig
index 4902d45e929c..c61e6427384c 100644
--- a/drivers/s390/net/Kconfig
+++ b/drivers/s390/net/Kconfig
@@ -103,10 +103,11 @@ config CCWGROUP
 config ISM
 	tristate "Support for ISM vPCI Adapter"
 	depends on PCI
+	imply SMC
 	default n
 	help
 	  Select this option if you want to use the Internal Shared Memory
-	  vPCI Adapter.
+	  vPCI Adapter. The adapter can be used with the SMC network protocol.
 
 	  To compile as a module choose M. The module name is ism.
 	  If unsure, choose N.
diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index f7f271d668c8..cd0b95b3ea92 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -200,13 +200,13 @@ static void channel_free(struct channel *ch)
 static void channel_remove(struct channel *ch)
 {
 	struct channel **c = &channels;
-	char chid[CTCM_ID_SIZE+1];
+	char chid[CTCM_ID_SIZE];
 	int ok = 0;
 
 	if (ch == NULL)
 		return;
 	else
-		strncpy(chid, ch->id, CTCM_ID_SIZE);
+		strscpy(chid, ch->id, sizeof(chid));
 
 	channel_free(ch);
 	while (*c) {
diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c
index 6df7f377d2f9..622a61f8a3b8 100644
--- a/drivers/s390/net/ism_drv.c
+++ b/drivers/s390/net/ism_drv.c
@@ -30,7 +30,6 @@ static const struct pci_device_id ism_device_table[] = {
 MODULE_DEVICE_TABLE(pci, ism_device_table);
 
 static debug_info_t *ism_debug_info;
-static const struct smcd_ops ism_ops;
 
 #define NO_CLIENT		0xff		/* must be >= MAX_CLIENTS */
 static struct ism_client *clients[MAX_CLIENTS];	/* use an array rather than */
@@ -289,32 +288,19 @@ out:
 	return ret;
 }
 
-static int ism_query_rgid(struct ism_dev *ism, u64 rgid, u32 vid_valid,
-			  u32 vid)
-{
-	union ism_query_rgid cmd;
-
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.request.hdr.cmd = ISM_QUERY_RGID;
-	cmd.request.hdr.len = sizeof(cmd.request);
-
-	cmd.request.rgid = rgid;
-	cmd.request.vlan_valid = vid_valid;
-	cmd.request.vlan_id = vid;
-
-	return ism_cmd(ism, &cmd);
-}
-
 static void ism_free_dmb(struct ism_dev *ism, struct ism_dmb *dmb)
 {
 	clear_bit(dmb->sba_idx, ism->sba_bitmap);
-	dma_free_coherent(&ism->pdev->dev, dmb->dmb_len,
-			  dmb->cpu_addr, dmb->dma_addr);
+	dma_unmap_page(&ism->pdev->dev, dmb->dma_addr, dmb->dmb_len,
+		       DMA_FROM_DEVICE);
+	folio_put(virt_to_folio(dmb->cpu_addr));
 }
 
 static int ism_alloc_dmb(struct ism_dev *ism, struct ism_dmb *dmb)
 {
+	struct folio *folio;
 	unsigned long bit;
+	int rc;
 
 	if (PAGE_ALIGN(dmb->dmb_len) > dma_get_max_seg_size(&ism->pdev->dev))
 		return -EINVAL;
@@ -331,14 +317,30 @@ static int ism_alloc_dmb(struct ism_dev *ism, struct ism_dmb *dmb)
 	    test_and_set_bit(dmb->sba_idx, ism->sba_bitmap))
 		return -EINVAL;
 
-	dmb->cpu_addr = dma_alloc_coherent(&ism->pdev->dev, dmb->dmb_len,
-					   &dmb->dma_addr,
-					   GFP_KERNEL | __GFP_NOWARN |
-					   __GFP_NOMEMALLOC | __GFP_NORETRY);
-	if (!dmb->cpu_addr)
-		clear_bit(dmb->sba_idx, ism->sba_bitmap);
+	folio = folio_alloc(GFP_KERNEL | __GFP_NOWARN | __GFP_NOMEMALLOC |
+			    __GFP_NORETRY, get_order(dmb->dmb_len));
 
-	return dmb->cpu_addr ? 0 : -ENOMEM;
+	if (!folio) {
+		rc = -ENOMEM;
+		goto out_bit;
+	}
+
+	dmb->cpu_addr = folio_address(folio);
+	dmb->dma_addr = dma_map_page(&ism->pdev->dev,
+				     virt_to_page(dmb->cpu_addr), 0,
+				     dmb->dmb_len, DMA_FROM_DEVICE);
+	if (dma_mapping_error(&ism->pdev->dev, dmb->dma_addr)) {
+		rc = -ENOMEM;
+		goto out_free;
+	}
+
+	return 0;
+
+out_free:
+	kfree(dmb->cpu_addr);
+out_bit:
+	clear_bit(dmb->sba_idx, ism->sba_bitmap);
+	return rc;
 }
 
 int ism_register_dmb(struct ism_dev *ism, struct ism_dmb *dmb,
@@ -429,23 +431,6 @@ static int ism_del_vlan_id(struct ism_dev *ism, u64 vlan_id)
 	return ism_cmd(ism, &cmd);
 }
 
-static int ism_signal_ieq(struct ism_dev *ism, u64 rgid, u32 trigger_irq,
-			  u32 event_code, u64 info)
-{
-	union ism_sig_ieq cmd;
-
-	memset(&cmd, 0, sizeof(cmd));
-	cmd.request.hdr.cmd = ISM_SIGNAL_IEQ;
-	cmd.request.hdr.len = sizeof(cmd.request);
-
-	cmd.request.rgid = rgid;
-	cmd.request.trigger_irq = trigger_irq;
-	cmd.request.event_code = event_code;
-	cmd.request.info = info;
-
-	return ism_cmd(ism, &cmd);
-}
-
 static unsigned int max_bytes(unsigned int start, unsigned int len,
 			      unsigned int boundary)
 {
@@ -503,14 +488,6 @@ u8 *ism_get_seid(void)
 }
 EXPORT_SYMBOL_GPL(ism_get_seid);
 
-static u16 ism_get_chid(struct ism_dev *ism)
-{
-	if (!ism || !ism->pdev)
-		return 0;
-
-	return to_zpci(ism->pdev)->pchid;
-}
-
 static void ism_handle_event(struct ism_dev *ism)
 {
 	struct ism_event *entry;
@@ -569,11 +546,6 @@ static irqreturn_t ism_handle_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static u64 ism_get_local_gid(struct ism_dev *ism)
-{
-	return ism->local_gid;
-}
-
 static int ism_dev_init(struct ism_dev *ism)
 {
 	struct pci_dev *pdev = ism->pdev;
@@ -774,6 +746,22 @@ module_exit(ism_exit);
 /*************************** SMC-D Implementation *****************************/
 
 #if IS_ENABLED(CONFIG_SMC)
+static int ism_query_rgid(struct ism_dev *ism, u64 rgid, u32 vid_valid,
+			  u32 vid)
+{
+	union ism_query_rgid cmd;
+
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.request.hdr.cmd = ISM_QUERY_RGID;
+	cmd.request.hdr.len = sizeof(cmd.request);
+
+	cmd.request.rgid = rgid;
+	cmd.request.vlan_valid = vid_valid;
+	cmd.request.vlan_id = vid;
+
+	return ism_cmd(ism, &cmd);
+}
+
 static int smcd_query_rgid(struct smcd_dev *smcd, u64 rgid, u32 vid_valid,
 			   u32 vid)
 {
@@ -811,6 +799,23 @@ static int smcd_reset_vlan_required(struct smcd_dev *smcd)
 	return ism_cmd_simple(smcd->priv, ISM_RESET_VLAN);
 }
 
+static int ism_signal_ieq(struct ism_dev *ism, u64 rgid, u32 trigger_irq,
+			  u32 event_code, u64 info)
+{
+	union ism_sig_ieq cmd;
+
+	memset(&cmd, 0, sizeof(cmd));
+	cmd.request.hdr.cmd = ISM_SIGNAL_IEQ;
+	cmd.request.hdr.len = sizeof(cmd.request);
+
+	cmd.request.rgid = rgid;
+	cmd.request.trigger_irq = trigger_irq;
+	cmd.request.event_code = event_code;
+	cmd.request.info = info;
+
+	return ism_cmd(ism, &cmd);
+}
+
 static int smcd_signal_ieq(struct smcd_dev *smcd, u64 rgid, u32 trigger_irq,
 			   u32 event_code, u64 info)
 {
@@ -830,11 +835,24 @@ static int smcd_supports_v2(void)
 		SYSTEM_EID.type[0] != '0';
 }
 
+static u64 ism_get_local_gid(struct ism_dev *ism)
+{
+	return ism->local_gid;
+}
+
 static u64 smcd_get_local_gid(struct smcd_dev *smcd)
 {
 	return ism_get_local_gid(smcd->priv);
 }
 
+static u16 ism_get_chid(struct ism_dev *ism)
+{
+	if (!ism || !ism->pdev)
+		return 0;
+
+	return to_zpci(ism->pdev)->pchid;
+}
+
 static u16 smcd_get_chid(struct smcd_dev *smcd)
 {
 	return ism_get_chid(smcd->priv);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 9a4c80bfc0d9..6668a249bc38 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -364,22 +364,6 @@ out:
 	return rc;
 }
 
-static int qeth_alloc_cq(struct qeth_card *card)
-{
-	if (card->options.cq == QETH_CQ_ENABLED) {
-		QETH_CARD_TEXT(card, 2, "cqon");
-		card->qdio.c_q = qeth_alloc_qdio_queue();
-		if (!card->qdio.c_q) {
-			dev_err(&card->gdev->dev, "Failed to create completion queue\n");
-			return -ENOMEM;
-		}
-	} else {
-		QETH_CARD_TEXT(card, 2, "nocq");
-		card->qdio.c_q = NULL;
-	}
-	return 0;
-}
-
 static void qeth_free_cq(struct qeth_card *card)
 {
 	if (card->qdio.c_q) {
@@ -388,6 +372,25 @@ static void qeth_free_cq(struct qeth_card *card)
 	}
 }
 
+static int qeth_alloc_cq(struct qeth_card *card)
+{
+	if (card->options.cq == QETH_CQ_ENABLED) {
+		QETH_CARD_TEXT(card, 2, "cqon");
+		if (!card->qdio.c_q) {
+			card->qdio.c_q = qeth_alloc_qdio_queue();
+			if (!card->qdio.c_q) {
+				dev_err(&card->gdev->dev,
+					"Failed to create completion queue\n");
+				return -ENOMEM;
+			}
+		}
+	} else {
+		QETH_CARD_TEXT(card, 2, "nocq");
+		qeth_free_cq(card);
+	}
+	return 0;
+}
+
 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 							int delayed)
 {
@@ -1179,6 +1182,20 @@ static int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev,
 	}
 }
 
+/**
+ * qeth_irq() - qeth interrupt handler
+ * @cdev: ccw device
+ * @intparm: expect pointer to iob
+ * @irb: Interruption Response Block
+ *
+ * In the good path:
+ * corresponding qeth channel is locked with last used iob as active_cmd.
+ * But this function is also called for error interrupts.
+ *
+ * Caller ensures that:
+ * Interrupts are disabled; ccw device lock is held;
+ *
+ */
 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 		struct irb *irb)
 {
@@ -1220,11 +1237,10 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 		iob = (struct qeth_cmd_buffer *) (addr_t)intparm;
 	}
 
-	qeth_unlock_channel(card, channel);
-
 	rc = qeth_check_irb_error(card, cdev, irb);
 	if (rc) {
 		/* IO was terminated, free its resources. */
+		qeth_unlock_channel(card, channel);
 		if (iob)
 			qeth_cancel_cmd(iob, rc);
 		return;
@@ -1268,6 +1284,7 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 		rc = qeth_get_problem(card, cdev, irb);
 		if (rc) {
 			card->read_or_write_problem = 1;
+			qeth_unlock_channel(card, channel);
 			if (iob)
 				qeth_cancel_cmd(iob, rc);
 			qeth_clear_ipacmd_list(card);
@@ -1276,6 +1293,26 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
 		}
 	}
 
+	if (scsw_cmd_is_valid_cc(&irb->scsw) && irb->scsw.cmd.cc == 1 && iob) {
+		/* channel command hasn't started: retry.
+		 * active_cmd is still set to last iob
+		 */
+		QETH_CARD_TEXT(card, 2, "irqcc1");
+		rc = ccw_device_start_timeout(cdev, __ccw_from_cmd(iob),
+					      (addr_t)iob, 0, 0, iob->timeout);
+		if (rc) {
+			QETH_DBF_MESSAGE(2,
+					 "ccw retry on %x failed, rc = %i\n",
+					 CARD_DEVID(card), rc);
+			QETH_CARD_TEXT_(card, 2, " err%d", rc);
+			qeth_unlock_channel(card, channel);
+			qeth_cancel_cmd(iob, rc);
+		}
+		return;
+	}
+
+	qeth_unlock_channel(card, channel);
+
 	if (iob) {
 		/* sanity check: */
 		if (irb->scsw.cmd.count > iob->length) {
@@ -2594,6 +2631,10 @@ static int qeth_alloc_qdio_queues(struct qeth_card *card)
 
 	QETH_CARD_TEXT(card, 2, "allcqdbf");
 
+	/* completion */
+	if (qeth_alloc_cq(card))
+		goto out_err;
+
 	if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
 		QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
 		return 0;
@@ -2629,10 +2670,6 @@ static int qeth_alloc_qdio_queues(struct qeth_card *card)
 		queue->priority = QETH_QIB_PQUE_PRIO_DEFAULT;
 	}
 
-	/* completion */
-	if (qeth_alloc_cq(card))
-		goto out_freeoutq;
-
 	return 0;
 
 out_freeoutq:
@@ -2643,6 +2680,8 @@ out_freeoutq:
 	qeth_free_buffer_pool(card);
 out_buffer_pool:
 	atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
+	qeth_free_cq(card);
+out_err:
 	return -ENOMEM;
 }
 
@@ -2650,11 +2689,12 @@ static void qeth_free_qdio_queues(struct qeth_card *card)
 {
 	int i, j;
 
+	qeth_free_cq(card);
+
 	if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
 		QETH_QDIO_UNINITIALIZED)
 		return;
 
-	qeth_free_cq(card);
 	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
 		if (card->qdio.in_q->bufs[j].rx_skb) {
 			consume_skb(card->qdio.in_q->bufs[j].rx_skb);
@@ -3675,7 +3715,7 @@ static void qeth_flush_queue(struct qeth_qdio_out_q *queue)
 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
 {
 	/*
-	 * check if weed have to switch to non-packing mode or if
+	 * check if we have to switch to non-packing mode or if
 	 * we have to get a pci flag out on the queue
 	 */
 	if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
@@ -3708,24 +3748,11 @@ static void qeth_qdio_poll(struct ccw_device *cdev, unsigned long card_ptr)
 
 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
 {
-	int rc;
-
-	if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
-		rc = -1;
-		goto out;
-	} else {
-		if (card->options.cq == cq) {
-			rc = 0;
-			goto out;
-		}
-
-		qeth_free_qdio_queues(card);
-		card->options.cq = cq;
-		rc = 0;
-	}
-out:
-	return rc;
+	if (card->options.cq == QETH_CQ_NOTAVAILABLE)
+		return -1;
 
+	card->options.cq = cq;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(qeth_configure_cq);
 
@@ -6226,7 +6253,7 @@ static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
 	new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
 	if (!new_entry)
 		goto err_dbg;
-	strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
+	strscpy(new_entry->dbf_name, name, sizeof(new_entry->dbf_name));
 	new_entry->dbf_info = card->debug;
 	mutex_lock(&qeth_dbf_list_mutex);
 	list_add(&new_entry->dbf_list, &qeth_dbf_list);
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 87c5451e2dce..3137bc8dccc8 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -255,9 +255,10 @@ static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 		if (!recover) {
 			hash_del(&addr->hnode);
 			kfree(addr);
-			continue;
+		} else {
+			/* prepare for recovery */
+			addr->disp_flag = QETH_DISP_ADDR_ADD;
 		}
-		addr->disp_flag = QETH_DISP_ADDR_ADD;
 	}
 
 	mutex_unlock(&card->ip_lock);
@@ -278,9 +279,11 @@ static void qeth_l3_recover_ip(struct qeth_card *card)
 		if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 			rc = qeth_l3_register_addr_entry(card, addr);
 
-			if (!rc) {
+			if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
+				/* keep it in the records */
 				addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 			} else {
+				/* bad address */
 				hash_del(&addr->hnode);
 				kfree(addr);
 			}