1 files changed, 8 insertions, 8 deletions

diff --git a/drivers/char/n_hdlc.c b/drivers/char/n_hdlc.c
index c68118efad84..47d32281032c 100644
--- a/drivers/char/n_hdlc.c
+++ b/drivers/char/n_hdlc.c
@@ -598,18 +598,18 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
                 return -EFAULT;
         }
 
-        lock_kernel();
+        tty_lock();
 
         for (;;) {
                 if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) {
-                        unlock_kernel();
+                        tty_unlock();
                         return -EIO;
                 }
 
                 n_hdlc = tty2n_hdlc (tty);
                 if (!n_hdlc || n_hdlc->magic != HDLC_MAGIC ||
                          tty != n_hdlc->tty) {
-                        unlock_kernel();
+                        tty_unlock();
                         return 0;
                 }
 
@@ -619,13 +619,13 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
                         
                 /* no data */
                 if (file->f_flags & O_NONBLOCK) {
-                        unlock_kernel();
+                        tty_unlock();
                         return -EAGAIN;
                 }
                         
                 interruptible_sleep_on (&tty->read_wait);
                 if (signal_pending(current)) {
-                        unlock_kernel();
+                        tty_unlock();
                         return -EINTR;
                 }
         }
@@ -648,7 +648,7 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
                 kfree(rbuf);
         else    
                 n_hdlc_buf_put(&n_hdlc->rx_free_buf_list,rbuf);
-        unlock_kernel();
+        tty_unlock();
         return ret;
         
 }       /* end of n_hdlc_tty_read() */
@@ -691,7 +691,7 @@ static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file,
                 count = maxframe;
         }
         
-        lock_kernel();
+        tty_lock();
 
         add_wait_queue(&tty->write_wait, &wait);
         set_current_state(TASK_INTERRUPTIBLE);
@@ -731,7 +731,7 @@ static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file,
                 n_hdlc_buf_put(&n_hdlc->tx_buf_list,tbuf);
                 n_hdlc_send_frames(n_hdlc,tty);
         }
-        unlock_kernel();
+        tty_unlock();
         return error;
         
 }       /* end of n_hdlc_tty_write() */