patch-2.3.21 linux/drivers/char/n_tty.c

• Lines: 26
• Date: Mon Oct 11 10:10:19 1999
• Orig file: v2.3.20/linux/drivers/char/n_tty.c
• Orig date: Tue Aug 31 17:29:13 1999

diff -u --recursive --new-file v2.3.20/linux/drivers/char/n_tty.c linux/drivers/char/n_tty.c
@@ -604,7 +604,7 @@
 			tty->canon_head = tty->read_head;
 			tty->canon_data++;
 			if (tty->fasync)
-				kill_fasync(tty->fasync, SIGIO);
+				kill_fasync(tty->fasync, SIGIO, POLL_IN);
 			if (waitqueue_active(&tty->read_wait))
 				wake_up_interruptible(&tty->read_wait);
 			return;
@@ -706,7 +706,7 @@
 
 	if (!tty->icanon && (tty->read_cnt >= tty->minimum_to_wake)) {
 		if (tty->fasync)
-			kill_fasync(tty->fasync, SIGIO);
+			kill_fasync(tty->fasync, SIGIO, POLL_IN);
 		if (waitqueue_active(&tty->read_wait))
 			wake_up_interruptible(&tty->read_wait);
 	}
@@ -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);