serial: doc: Document .set_ldisc()

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --git a/Documentation/serial/driver b/Documentation/serial/driver
index 3b2a97d..3b08df5 100644 (file)
--- a/Documentation/serial/driver
+++ b/Documentation/serial/driver
@@ -259,6 +259,11 @@ hardware.
        Interrupts: caller dependent.
        This call must not sleep
 
+  set_ldisc(port,termios)
+       Notifier for discipline change. See Documentation/serial/tty.txt.
+
+       Locking: caller holds port->mutex
+
   pm(port,state,oldstate)
        Perform any power management related activities on the specified
        port.  State indicates the new state (defined by