diff options
| -rw-r--r-- | drivers/char/pty.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/char/pty.c b/drivers/char/pty.c index b33d6688e910..53761cefa915 100644 --- a/drivers/char/pty.c +++ b/drivers/char/pty.c @@ -120,8 +120,10 @@ static int pty_write(struct tty_struct *tty, const unsigned char *buf, int c) /* Stuff the data into the input queue of the other end */ c = tty_insert_flip_string(to, buf, c); /* And shovel */ - tty_flip_buffer_push(to); - tty_wakeup(tty); + if (c) { + tty_flip_buffer_push(to); + tty_wakeup(tty); + } } return c; } |