path: root/Documentation/serial
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authorRodolfo Giometti <giometti@linux.it>2010-03-10 15:23:45 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 15:52:43 -0800
commitb3e63afe8a74c0134d05a551cc74facc3b3ec0d7 (patch)
tree7b20af342a2c9ff31bd202e81075fab22cc2a282 /Documentation/serial
parent697fb85fcf21b5229a3072440222d14b05ef2abe (diff)
ldisc: new dcd_change() method for line disciplines
Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/serial')
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/serial/tty.txt b/Documentation/serial/tty.txt
index 5e5349a4fcd2..7c900507279f 100644
--- a/Documentation/serial/tty.txt
+++ b/Documentation/serial/tty.txt
@@ -105,6 +105,10 @@ write_wakeup() - May be called at any point between open and close.
is permitted to call the driver write method from
this function. In such a situation defer it.
+dcd_change() - Report to the tty line the current DCD pin status
+ changes and the relative timestamp. The timestamp
+ can be NULL.
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