diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index bf616daeff4c..34b38fb7c2f7 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -786,12 +786,13 @@ cio_probe_console(void)
 	/*
 	 * enable console I/O-interrupt subclass
 	 */
-	ctl_set_bit(6, 31 - CONSOLE_ISC);
+	isc_register(CONSOLE_ISC);
 	console_subchannel.schib.pmcw.isc = CONSOLE_ISC;
 	console_subchannel.schib.pmcw.intparm =
 		(u32)(addr_t)&console_subchannel;
 	ret = cio_modify(&console_subchannel);
 	if (ret) {
+		isc_unregister(CONSOLE_ISC);
 		console_subchannel_in_use = 0;
 		return ERR_PTR(ret);
 	}
@@ -803,7 +804,7 @@ cio_release_console(void)
 {
 	console_subchannel.schib.pmcw.intparm = 0;
 	cio_modify(&console_subchannel);
-	ctl_clear_bit(6, 31 - CONSOLE_ISC);
+	isc_unregister(CONSOLE_ISC);
 	console_subchannel_in_use = 0;
 }
 
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index b24618b5362e..45ba07c0a286 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -806,7 +806,7 @@ init_channel_subsystem (void)
 	css_init_done = 1;
 
 	/* Enable default isc for I/O subchannels. */
-	ctl_set_bit(6, 31 - IO_SCH_ISC);
+	isc_register(IO_SCH_ISC);
 
 	for_each_subchannel(__init_channel_subsystem, NULL);
 	return 0;
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 8476f8c35c2d..2bf36e14b102 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -3892,6 +3892,7 @@ init_QDIO(void)
 					    qdio_mempool_alloc,
 					    qdio_mempool_free, NULL);
 
+	isc_register(QDIO_AIRQ_ISC);
 	if (tiqdio_check_chsc_availability())
 		QDIO_PRINT_ERR("Not all CHSCs supported. Continuing.\n");
 
@@ -3904,6 +3905,7 @@ static void __exit
 cleanup_QDIO(void)
 {
 	tiqdio_unregister_thinints();
+	isc_unregister(QDIO_AIRQ_ISC);
 	qdio_remove_procfs_entry();
 	qdio_release_qdio_memory();
 	qdio_unregister_dbf_views();