diff --git a/[refs] b/[refs] index 5386079def50..ebcce13a1783 100644 --- a/[refs] +++ b/[refs] @@ -1,2 +1,2 @@ --- -refs/heads/master: 805c22168da76a65c978017d0fe0d59cd048e995 +refs/heads/master: 18367c0ec73671fbfea35f13ae52d39437c53eb5 diff --git a/trunk/drivers/tty/tty_buffer.c b/trunk/drivers/tty/tty_buffer.c index f1a7918d71aa..6c9b7cd6778a 100644 --- a/trunk/drivers/tty/tty_buffer.c +++ b/trunk/drivers/tty/tty_buffer.c @@ -413,8 +413,7 @@ static void flush_to_ldisc(struct work_struct *work) spin_lock_irqsave(&tty->buf.lock, flags); if (!test_and_set_bit(TTY_FLUSHING, &tty->flags)) { - struct tty_buffer *head, *tail = tty->buf.tail; - int seen_tail = 0; + struct tty_buffer *head; while ((head = tty->buf.head) != NULL) { int count; char *char_buf; @@ -424,15 +423,6 @@ static void flush_to_ldisc(struct work_struct *work) if (!count) { if (head->next == NULL) break; - /* - There's a possibility tty might get new buffer - added during the unlock window below. We could - end up spinning in here forever hogging the CPU - completely. To avoid this let's have a rest each - time we processed the tail buffer. - */ - if (tail == head) - seen_tail = 1; tty->buf.head = head->next; tty_buffer_free(tty, head); continue; @@ -442,7 +432,7 @@ static void flush_to_ldisc(struct work_struct *work) line discipline as we want to empty the queue */ if (test_bit(TTY_FLUSHPENDING, &tty->flags)) break; - if (!tty->receive_room || seen_tail) + if (!tty->receive_room) break; if (count > tty->receive_room) count = tty->receive_room;