1 files changed, 2 insertions, 12 deletions

diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index f1a7918d71aa..6c9b7cd6778a 100644
--- a/drivers/tty/tty_buffer.c
+++ b/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;