diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c
index 2e616e33891d9816cbda04295eff5b5ec0d963d9..e3b3d390b4a3b2294f23428c6e5b70b688298f23 100644
--- a/drivers/s390/char/sclp_tty.c
+++ b/drivers/s390/char/sclp_tty.c
@@ -332,7 +332,7 @@ sclp_tty_write_string(const unsigned char *str, int count)
 		if (sclp_ttybuf == NULL) {
 			while (list_empty(&sclp_tty_pages)) {
 				spin_unlock_irqrestore(&sclp_tty_lock, flags);
-				if (in_atomic())
+				if (in_interrupt())
 					sclp_sync_wait();
 				else
 					wait_event(sclp_tty_waitq,
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index f7b258dfd52cf5a40c14470654a240c0f29b0a93..ed507594e62ba0adf12fde30a1ecd23a91509180 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -383,7 +383,7 @@ sclp_vt220_timeout(unsigned long data)
  */
 static int
 __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule,
-		   int convertlf)
+		   int convertlf, int may_schedule)
 {
 	unsigned long flags;
 	void *page;
@@ -398,9 +398,8 @@ __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule,
 		/* Create a sclp output buffer if none exists yet */
 		if (sclp_vt220_current_request == NULL) {
 			while (list_empty(&sclp_vt220_empty)) {
-				spin_unlock_irqrestore(&sclp_vt220_lock,
-						       flags);
-				if (in_atomic())
+				spin_unlock_irqrestore(&sclp_vt220_lock, flags);
+				if (in_interrupt() || !may_schedule)
 					sclp_sync_wait();
 				else
 					wait_event(sclp_vt220_waitq,
@@ -450,7 +449,7 @@ __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule,
 static int
 sclp_vt220_write(struct tty_struct *tty, const unsigned char *buf, int count)
 {
-	return __sclp_vt220_write(buf, count, 1, 0);
+	return __sclp_vt220_write(buf, count, 1, 0, 1);
 }
 
 #define SCLP_VT220_SESSION_ENDED	0x01
@@ -529,7 +528,7 @@ sclp_vt220_close(struct tty_struct *tty, struct file *filp)
 static void
 sclp_vt220_put_char(struct tty_struct *tty, unsigned char ch)
 {
-	__sclp_vt220_write(&ch, 1, 0, 0);
+	__sclp_vt220_write(&ch, 1, 0, 0, 1);
 }
 
 /*
@@ -746,7 +745,7 @@ __initcall(sclp_vt220_tty_init);
 static void
 sclp_vt220_con_write(struct console *con, const char *buf, unsigned int count)
 {
-	__sclp_vt220_write((const unsigned char *) buf, count, 1, 1);
+	__sclp_vt220_write((const unsigned char *) buf, count, 1, 1, 0);
 }
 
 static struct tty_driver *