patch-2.2.13 linux/drivers/char/n_tty.c

• Lines: 8
• Date: Tue Oct 19 17:14:00 1999
• Orig file: v2.2.12/linux/drivers/char/n_tty.c
• Orig date: Sat Apr 24 17:49:37 1999

diff -u --recursive --new-file v2.2.12/linux/drivers/char/n_tty.c linux/drivers/char/n_tty.c
@@ -854,6 +854,7 @@
 	retval = 0;
 	n = MIN(*nr, MIN(tty->read_cnt, N_TTY_BUF_SIZE - tty->read_tail));
 	if (n) {
+		mb();
 		retval = copy_to_user(*b, &tty->read_buf[tty->read_tail], n);
 		n -= retval;
 		tty->read_tail = (tty->read_tail + n) & (N_TTY_BUF_SIZE-1);