s390/netiucv: Switch over to sysfs_emit()

Per Documentation/filesystems/sysfs.rst, sysfs_emit() is preferred for
presenting attributes to user space in sysfs. Convert the left-over uses
in the netiucv code.

Signed-off-by: Mete Durlu <[e-mail]>
Reviewed-by: Heiko Carstens <[e-mail]>
Signed-off-by: Heiko Carstens <[e-mail]>

drivers/s390/net/netiucv.c

···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%s\n", netiucv_printuser(priv->conn));
+	return sysfs_emit(buf, "%s\n", netiucv_printuser(priv->conn));
 }
 
 static int netiucv_check_user(const char *buf, size_t count, char *username,
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%d\n", priv->conn->max_buffsize);
+	return sysfs_emit(buf, "%d\n", priv->conn->max_buffsize);
 }
 
 static ssize_t buffer_write (struct device *dev, struct device_attribute *attr,
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%s\n", fsm_getstate_str(priv->fsm));
+	return sysfs_emit(buf, "%s\n", fsm_getstate_str(priv->fsm));
 }
 
 static DEVICE_ATTR(device_fsm_state, 0444, dev_fsm_show, NULL);
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%s\n", fsm_getstate_str(priv->conn->fsm));
+	return sysfs_emit(buf, "%s\n", fsm_getstate_str(priv->conn->fsm));
 }
 
 static DEVICE_ATTR(connection_fsm_state, 0444, conn_fsm_show, NULL);
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%ld\n", priv->conn->prof.maxmulti);
+	return sysfs_emit(buf, "%ld\n", priv->conn->prof.maxmulti);
 }
 
 static ssize_t maxmulti_write (struct device *dev,
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%ld\n", priv->conn->prof.maxcqueue);
+	return sysfs_emit(buf, "%ld\n", priv->conn->prof.maxcqueue);
 }
 
 static ssize_t maxcq_write (struct device *dev, struct device_attribute *attr,
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%ld\n", priv->conn->prof.doios_single);
+	return sysfs_emit(buf, "%ld\n", priv->conn->prof.doios_single);
 }
 
 static ssize_t sdoio_write (struct device *dev, struct device_attribute *attr,
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%ld\n", priv->conn->prof.doios_multi);
+	return sysfs_emit(buf, "%ld\n", priv->conn->prof.doios_multi);
 }
 
 static ssize_t mdoio_write (struct device *dev, struct device_attribute *attr,
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%ld\n", priv->conn->prof.txlen);
+	return sysfs_emit(buf, "%ld\n", priv->conn->prof.txlen);
 }
 
 static ssize_t txlen_write (struct device *dev, struct device_attribute *attr,
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%ld\n", priv->conn->prof.tx_time);
+	return sysfs_emit(buf, "%ld\n", priv->conn->prof.tx_time);
 }
 
 static ssize_t txtime_write (struct device *dev, struct device_attribute *attr,
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%ld\n", priv->conn->prof.tx_pending);
+	return sysfs_emit(buf, "%ld\n", priv->conn->prof.tx_pending);
 }
 
 static ssize_t txpend_write (struct device *dev, struct device_attribute *attr,
···
 	struct netiucv_priv *priv = dev_get_drvdata(dev);
 
 	IUCV_DBF_TEXT(trace, 5, __func__);
-	return sprintf(buf, "%ld\n", priv->conn->prof.tx_max_pending);
+	return sysfs_emit(buf, "%ld\n", priv->conn->prof.tx_max_pending);
 }
 
 static ssize_t txmpnd_write (struct device *dev, struct device_attribute *attr,