patch-2.4.22 linux-2.4.22/drivers/char/n_tty.c

• Lines: 10
• Date: 2003-08-25 04:44:41.000000000 -0700
• Orig file: linux-2.4.21/drivers/char/n_tty.c
• Orig date: 2002-08-02 17:39:43.000000000 -0700

diff -urN linux-2.4.21/drivers/char/n_tty.c linux-2.4.22/drivers/char/n_tty.c
@@ -1238,7 +1238,8 @@
 		else
 			tty->minimum_to_wake = 1;
 	}
-	if (tty->driver.chars_in_buffer(tty) < WAKEUP_CHARS)
+	if (tty->driver.chars_in_buffer(tty) < WAKEUP_CHARS &&
+			tty->driver.write_room(tty) > 0)
 		mask |= POLLOUT | POLLWRNORM;
 	return mask;
 }