From: Paul Fulghum <paulkf@microgate.com>

Fix TCSBRK comment to prevent confusion or accidental removal.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/char/tty_io.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff -puN drivers/char/tty_io.c~tty-fix-tcsbrk-comment drivers/char/tty_io.c
--- a/drivers/char/tty_io.c~tty-fix-tcsbrk-comment
+++ a/drivers/char/tty_io.c
@@ -2617,10 +2617,9 @@ int tty_ioctl(struct inode * inode, stru
 			tty->driver->break_ctl(tty, 0);
 			return 0;
 		case TCSBRK:   /* SVID version: non-zero arg --> no break */
-			/*
-			 * XXX is the above comment correct, or the
-			 * code below correct?  Is this ioctl used at
-			 * all by anyone?
+			/* non-zero arg means wait for all output data
+			 * to be sent (performed above) but don't send break.
+			 * This is used by the tcdrain() termios function.
 			 */
 			if (!arg)
 				return send_break(tty, 250);
_