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ldisc: new dcd_change() method for line disciplines

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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>
This commit is contained in:
Rodolfo Giometti
2010-03-10 15:23:45 -08:00
committed by Linus Torvalds
parent 697fb85fcf
commit b3e63afe8a
2 changed files with 12 additions and 0 deletions
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4
Documentation/serial/tty.txt
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@@ -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.
Driver Access