Commit 3ac40b9b authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
Browse files

termios: document callback more clearly 



Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 05a462af

Documentation/tty.txt

+8 −0
Original line number Diff line number Diff line
@@ -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.



			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