5 files changed, 55 insertions, 4 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 4361d9772c4..d72a9216ee2 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -3440,8 +3440,16 @@ void dasd_generic_path_event(struct ccw_device *cdev, int *path_event)
 			device->path_data.opm &= ~eventlpm;
 			device->path_data.ppm &= ~eventlpm;
 			device->path_data.npm &= ~eventlpm;
-			if (oldopm && !device->path_data.opm)
-				dasd_generic_last_path_gone(device);
+			if (oldopm && !device->path_data.opm) {
+				dev_warn(&device->cdev->dev,
+					 "No verified channel paths remain "
+					 "for the device\n");
+				DBF_DEV_EVENT(DBF_WARNING, device,
+					      "%s", "last verified path gone");
+				dasd_eer_write(device, NULL, DASD_EER_NOPATH);
+				dasd_device_set_stop_bits(device,
+							  DASD_STOPPED_DC_WAIT);
+			}
 		}
 		if (path_event[chp] & PE_PATH_AVAILABLE) {
 			device->path_data.opm &= ~eventlpm;
diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c
index 690c3338a8a..464dd29d06c 100644
--- a/drivers/s390/block/xpram.c
+++ b/drivers/s390/block/xpram.c
@@ -343,6 +343,7 @@ static int __init xpram_setup_blkdev(void)
 			put_disk(xpram_disks[i]);
 			goto out;
 		}
+		queue_flag_set_unlocked(QUEUE_FLAG_NONROT, xpram_queues[i]);
 		blk_queue_make_request(xpram_queues[i], xpram_make_request);
 		blk_queue_logical_block_size(xpram_queues[i], 4096);
 	}
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index 21fabc6d5a9..6c440d4349d 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -352,12 +352,48 @@ static ssize_t chp_shared_show(struct device *dev,
 
 static DEVICE_ATTR(shared, 0444, chp_shared_show, NULL);
 
+static ssize_t chp_chid_show(struct device *dev, struct device_attribute *attr,
+			     char *buf)
+{
+	struct channel_path *chp = to_channelpath(dev);
+	ssize_t rc;
+
+	mutex_lock(&chp->lock);
+	if (chp->desc_fmt1.flags & 0x10)
+		rc = sprintf(buf, "%04x\n", chp->desc_fmt1.chid);
+	else
+		rc = 0;
+	mutex_unlock(&chp->lock);
+
+	return rc;
+}
+static DEVICE_ATTR(chid, 0444, chp_chid_show, NULL);
+
+static ssize_t chp_chid_external_show(struct device *dev,
+				      struct device_attribute *attr, char *buf)
+{
+	struct channel_path *chp = to_channelpath(dev);
+	ssize_t rc;
+
+	mutex_lock(&chp->lock);
+	if (chp->desc_fmt1.flags & 0x10)
+		rc = sprintf(buf, "%x\n", chp->desc_fmt1.flags & 0x8 ? 1 : 0);
+	else
+		rc = 0;
+	mutex_unlock(&chp->lock);
+
+	return rc;
+}
+static DEVICE_ATTR(chid_external, 0444, chp_chid_external_show, NULL);
+
 static struct attribute *chp_attrs[] = {
 	&dev_attr_status.attr,
 	&dev_attr_configure.attr,
 	&dev_attr_type.attr,
 	&dev_attr_cmg.attr,
 	&dev_attr_shared.attr,
+	&dev_attr_chid.attr,
+	&dev_attr_chid_external.attr,
 	NULL,
 };
 static struct attribute_group chp_attr_group = {
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 349d5fc4719..e7ef2a683b8 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -43,7 +43,9 @@ struct channel_path_desc_fmt1 {
 	u8 chpid;
 	u32:24;
 	u8 chpp;
-	u32 unused[3];
+	u32 unused[2];
+	u16 chid;
+	u32:16;
 	u16 mdc;
 	u16:13;
 	u8 r:1;
diff --git a/drivers/s390/net/netiucv.c b/drivers/s390/net/netiucv.c
index 4ffa66c87ea..9ca3996f65b 100644
--- a/drivers/s390/net/netiucv.c
+++ b/drivers/s390/net/netiucv.c
@@ -2040,6 +2040,7 @@ static struct net_device *netiucv_init_netdevice(char *username, char *userdata)
 			   netiucv_setup_netdevice);
 	if (!dev)
 		return NULL;
+	rtnl_lock();
 	if (dev_alloc_name(dev, dev->name) < 0)
 		goto out_netdev;
 
@@ -2061,6 +2062,7 @@ static struct net_device *netiucv_init_netdevice(char *username, char *userdata)
 out_fsm:
 	kfree_fsm(privptr->fsm);
 out_netdev:
+	rtnl_unlock();
 	free_netdev(dev);
 	return NULL;
 }
@@ -2100,6 +2102,7 @@ static ssize_t conn_write(struct device_driver *drv,
 
 	rc = netiucv_register_device(dev);
 	if (rc) {
+		rtnl_unlock();
 		IUCV_DBF_TEXT_(setup, 2,
 			"ret %d from netiucv_register_device\n", rc);
 		goto out_free_ndev;
@@ -2109,7 +2112,8 @@ static ssize_t conn_write(struct device_driver *drv,
 	priv = netdev_priv(dev);
 	SET_NETDEV_DEV(dev, priv->dev);
 
-	rc = register_netdev(dev);
+	rc = register_netdevice(dev);
+	rtnl_unlock();
 	if (rc)
 		goto out_unreg;