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serial: doc: Document .unthrottle()

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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Geert Uytterhoeven 2016-03-14 16:16:12 +01:00 committed by Jonathan Corbet
parent 39c5144e5f
commit e27585c797
1 changed files with 7 additions and 0 deletions
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7
Documentation/serial/driver
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@ -133,6 +133,13 @@ hardware.
Locking: none.
unthrottle(port)
Notify the serial driver that characters can now be sent to the serial
port without fear of overrunning the input buffers of the line
disciplines.
Locking: none.
send_xchar(port,ch)
Transmit a high priority character, even if the port is stopped.
This is used to implement XON/XOFF flow control and tcflow(). If