--- zzzz-none-000/linux-3.10.107/drivers/s390/cio/blacklist.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/s390/cio/blacklist.c	2021-02-04 17:41:59.000000000 +0000
@@ -260,16 +260,16 @@
 
 	parm = strsep(&buf, " ");
 
-	if (strcmp("free", parm) == 0)
+	if (strcmp("free", parm) == 0) {
 		rc = blacklist_parse_parameters(buf, free, 0);
-	else if (strcmp("add", parm) == 0)
+		css_schedule_eval_all_unreg(0);
+	} else if (strcmp("add", parm) == 0)
 		rc = blacklist_parse_parameters(buf, add, 0);
 	else if (strcmp("purge", parm) == 0)
 		return ccw_purge_blacklisted();
 	else
 		return -EINVAL;
 
-	css_schedule_reprobe();
 
 	return rc;
 }
@@ -330,18 +330,20 @@
 	if (!iter->in_range) {
 		/* First device in range. */
 		if ((iter->devno == __MAX_SUBCHANNEL) ||
-		    !is_blacklisted(iter->ssid, iter->devno + 1))
+		    !is_blacklisted(iter->ssid, iter->devno + 1)) {
 			/* Singular device. */
-			return seq_printf(s, "0.%x.%04x\n",
-					  iter->ssid, iter->devno);
+			seq_printf(s, "0.%x.%04x\n", iter->ssid, iter->devno);
+			return 0;
+		}
 		iter->in_range = 1;
-		return seq_printf(s, "0.%x.%04x-", iter->ssid, iter->devno);
+		seq_printf(s, "0.%x.%04x-", iter->ssid, iter->devno);
+		return 0;
 	}
 	if ((iter->devno == __MAX_SUBCHANNEL) ||
 	    !is_blacklisted(iter->ssid, iter->devno + 1)) {
 		/* Last device in range. */
 		iter->in_range = 0;
-		return seq_printf(s, "0.%x.%04x\n", iter->ssid, iter->devno);
+		seq_printf(s, "0.%x.%04x\n", iter->ssid, iter->devno);
 	}
 	return 0;
 }