From: Alan Cox <alan@lxorguk.ukuu.org.uk>

No longer used. TTY_FLIPBUF_SIZE will also go soon but needs a couple of
other cleanups first

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/tty.h |    5 -----
 1 file changed, 5 deletions(-)

diff -puN include/linux/tty.h~ttyh-remove-dead-define include/linux/tty.h
--- a/include/linux/tty.h~ttyh-remove-dead-define
+++ a/include/linux/tty.h
@@ -81,11 +81,6 @@ struct tty_bufhead {
 	int memory_used;		/* Buffer space used excluding free queue */
 };
 /*
- * The pty uses char_buf and flag_buf as a contiguous buffer
- */
-#define PTY_BUF_SIZE	4*TTY_FLIPBUF_SIZE
-
-/*
  * When a break, frame error, or parity error happens, these codes are
  * stuffed into the flags buffer.
  */
_