diff options
| -rw-r--r-- | drivers/tty/n_tty.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 9cdb0fa3c4bf..f9c584244f72 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -550,9 +550,9 @@ static ssize_t process_output_block(struct tty_struct *tty, mutex_lock(&ldata->output_lock); space = tty_write_room(tty); - if (!space) { + if (space <= 0) { mutex_unlock(&ldata->output_lock); - return 0; + return space; } if (nr > space) nr = space; |