tty: throttling race fix

[linux-2.6-block.git] / include / linux / tty_driver.h

diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index bcba84ea2d86ae280a2778ebcce9dc617c0b7e9c..3566129384a4d77e83d6496db87ea456eca2e9f6 100644 (file)
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -127,7 +127,8 @@
  *     the line discipline are close to full, and it should somehow
  *     signal that no more characters should be sent to the tty.
  *
- *     Optional: Always invoke via tty_throttle();
+ *     Optional: Always invoke via tty_throttle(), called under the
+ *     termios lock.
  * 
  * void (*unthrottle)(struct tty_struct * tty);
  *
@@ -135,7 +136,8 @@
  *     that characters can now be sent to the tty without fear of
  *     overrunning the input buffers of the line disciplines.
  * 
- *     Optional: Always invoke via tty_unthrottle();
+ *     Optional: Always invoke via tty_unthrottle(), called under the
+ *     termios lock.
  *
  * void (*stop)(struct tty_struct *tty);
  *