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path: root/drivers/s390/char/sclp_vt220.c
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Diffstat (limited to 'drivers/s390/char/sclp_vt220.c')
-rw-r--r--drivers/s390/char/sclp_vt220.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index f7b258dfd52..ed507594e62 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 *