n_tty: clean up coding style

[safe/jmp/linux-2.6] / drivers / char / tty_io.c

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 59f4721..d8d240c 100644 (file)
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1111,9 +1111,7 @@ void tty_write_message(struct tty_struct *tty, char *msg)
  *             Locks the line discipline as required
  *             Writes to the tty driver are serialized by the atomic_write_lock
  *     and are then processed in chunks to the device. The line discipline
- *     write method will not be involked in parallel for each device
- *             The line discipline write method is called under the big
- *     kernel lock for historical reasons. New code should not rely on this.
+ *     write method will not be invoked in parallel for each device.
  */
 
 static ssize_t tty_write(struct file *file, const char __user *buf,
@@ -1795,12 +1793,15 @@ retry_open:
        }
 #endif
        if (device == MKDEV(TTYAUX_MAJOR, 1)) {
-               driver = tty_driver_kref_get(console_device(&index));
-               if (driver) {
-                       /* Don't let /dev/console block */
-                       filp->f_flags |= O_NONBLOCK;
-                       noctty = 1;
-                       goto got_driver;
+               struct tty_driver *console_driver = console_device(&index);
+               if (console_driver) {
+                       driver = tty_driver_kref_get(console_driver);
+                       if (driver) {
+                               /* Don't let /dev/console block */
+                               filp->f_flags |= O_NONBLOCK;
+                               noctty = 1;
+                               goto got_driver;
+                       }
                }
                mutex_unlock(&tty_mutex);
                return -ENODEV;
@@ -2015,6 +2016,7 @@ static int tiocsti(struct tty_struct *tty, char __user *p)
                return -EPERM;
        if (get_user(ch, p))
                return -EFAULT;
+       tty_audit_tiocsti(tty, ch);
        ld = tty_ldisc_ref_wait(tty);
        ld->ops->receive_buf(tty, &ch, &mbz, 1);
        tty_ldisc_deref(ld);
@@ -2781,6 +2783,8 @@ void initialize_tty_struct(struct tty_struct *tty,
        INIT_WORK(&tty->hangup_work, do_tty_hangup);
        mutex_init(&tty->atomic_read_lock);
        mutex_init(&tty->atomic_write_lock);
+       mutex_init(&tty->output_lock);
+       mutex_init(&tty->echo_lock);
        spin_lock_init(&tty->read_lock);
        spin_lock_init(&tty->ctrl_lock);
        INIT_LIST_HEAD(&tty->tty_files);