tty: Fix comments that reference BKL, eventd, old paths

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/serial_core.c

@@ -1309,9 +1309,10 @@ static void uart_set_termios(struct tty_struct *tty,
 }
 
 /*
- * In 2.4.5, calls to this will be serialized via the BKL in
- *  linux/drivers/char/tty_io.c:tty_release()
- *  linux/drivers/char/tty_io.c:do_tty_handup()
+ * Calls to uart_close() are serialised via the tty_lock in
+ *   drivers/tty/tty_io.c:tty_release()
+ *   drivers/tty/tty_io.c:do_tty_hangup()
+ * This runs from a workqueue and can sleep for a _short_ time only.
  */
 static void uart_close(struct tty_struct *tty, struct file *filp)
 {
@@ -1438,10 +1439,9 @@ static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
 }
 
 /*
- * This is called with the BKL held in
- *  linux/drivers/char/tty_io.c:do_tty_hangup()
- * We're called from the eventd thread, so we can sleep for
- * a _short_ time only.
+ * Calls to uart_hangup() are serialised by the tty_lock in
+ *   drivers/tty/tty_io.c:do_tty_hangup()
+ * This runs from a workqueue and can sleep for a _short_ time only.
  */
 static void uart_hangup(struct tty_struct *tty)
 {
@@ -1522,8 +1522,8 @@ static void uart_dtr_rts(struct tty_port *port, int onoff)
 }
 
 /*
- * calls to uart_open are serialised by the BKL in
- *   fs/char_dev.c:chrdev_open()
+ * Calls to uart_open are serialised by the tty_lock in
+ *   drivers/tty/tty_io.c:tty_open()
  * Note that if this fails, then uart_close() _will_ be called.
  *
  * In time, we want to scrap the "opening nonpresent ports"

drivers/tty/tty_io.c

@@ -536,7 +536,7 @@ EXPORT_SYMBOL_GPL(tty_wakeup);
  *	__tty_hangup		-	actual handler for hangup events
  *	@work: tty device
  *
- *	This can be called by the "eventd" kernel thread.  That is process
+ *	This can be called by a "kworker" kernel thread.  That is process
  *	synchronous but doesn't hold any locks, so we need to make sure we
  *	have the appropriate locks for what we're doing.
  *