Signed-off-by: Alan Cox <[email protected]>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.24-rc2-mm1/Documentation/tty.txt linux-2.6.24-rc2-mm1/Documentation/tty.txt
--- linux.vanilla-2.6.24-rc2-mm1/Documentation/tty.txt 2007-11-16 17:20:39.000000000 +0000
+++ linux-2.6.24-rc2-mm1/Documentation/tty.txt 2007-11-16 18:10:43.000000000 +0000
@@ -132,6 +132,14 @@
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
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