m68k: Disable Amiga serial console support if modular

[linux-2.6-omap-h63xx.git] / Documentation / tty.txt

diff --git a/Documentation/tty.txt b/Documentation/tty.txt
index 048a8762cfb548fbe2b2078ea8527a7a9c50bc01..8e65c4498c521259d93061e0a94a2d3652eaef98 100644 (file)
--- a/Documentation/tty.txt
+++ b/Documentation/tty.txt
@@ -132,6 +132,14 @@ set_termios()              Notify the tty driver that the device's termios
                        tty->termios. Previous settings should be passed in
                        the "old" argument.
 
                        tty->termios. Previous settings should be passed in
                        the "old" argument.
 

+                       The API is defined such that the driver should return
+                       the actual modes selected. This means that the
+                       driver function is responsible for modifying any
+                       bits in the request it cannot fulfill to indicate
+                       the actual modes being used. A device with no
+                       hardware capability for change (eg a USB dongle or
+                       virtual port) can provide NULL for this method.
+

 throttle()             Notify the tty driver that input buffers for the
                        line discipline are close to full, and it should
                        somehow signal that no more characters should be
 throttle()             Notify the tty driver that input buffers for the
                        line discipline are close to full, and it should
                        somehow signal that no more characters should be