Merge branch 'master'

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/char/n_tty.c b/drivers/char/n_tty.c
index ccad7ae94541..ede365d05387 100644
--- a/drivers/char/n_tty.c
+++ b/drivers/char/n_tty.c
@@ -132,7 +132,7 @@ static void put_tty_queue(unsigned char c, struct tty_struct *tty)
  *      We test the TTY_THROTTLED bit first so that it always
  *      indicates the current state. The decision about whether
  *      it is worth allowing more input has been taken by the caller.
- *      Can sleep, may be called under the atomic_read semaphore but
+ *      Can sleep, may be called under the atomic_read_lock mutex but
  *      this is not guaranteed.
  */
  
@@ -1132,7 +1132,7 @@ static inline int input_available_p(struct tty_struct *tty, int amt)
  *      buffer, and once to drain the space from the (physical) beginning of
  *      the buffer to head pointer.
  *
- *      Called under the tty->atomic_read sem and with TTY_DONT_FLIP set
+ *      Called under the tty->atomic_read_lock sem and with TTY_DONT_FLIP set
  *
  */
  
@@ -1262,11 +1262,11 @@ do_it_again:
          *      Internal serialization of reads.
          */
         if (file->f_flags & O_NONBLOCK) {
-                if (down_trylock(&tty->atomic_read))
+                if (!mutex_trylock(&tty->atomic_read_lock))
                         return -EAGAIN;
         }
         else {
-                if (down_interruptible(&tty->atomic_read))
+                if (mutex_lock_interruptible(&tty->atomic_read_lock))
                         return -ERESTARTSYS;
         }
 
@@ -1393,7 +1393,7 @@ do_it_again:
                         timeout = time;
         }
         clear_bit(TTY_DONT_FLIP, &tty->flags);
-        up(&tty->atomic_read);
+        mutex_unlock(&tty->atomic_read_lock);
         remove_wait_queue(&tty->read_wait, &wait);
 
         if (!waitqueue_active(&tty->read_wait))