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Commit 39c5144e authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Jonathan Corbet
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serial: doc: Document .throttle() 



Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 4895b1d7

Documentation/serial/driver

+7 −0
Original line number Diff line number Diff line
@@ -126,6 +126,13 @@ hardware. 
	Interrupts: locally disabled.

	This call must not sleep



  throttle(port)

	Notify the serial driver that input buffers for the line discipline are

	close to full, and it should somehow signal that no more characters

	should be sent to the serial port.



	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