Signed-off-by: Geert Uytterhoeven <[email protected]>
---
Documentation/serial/driver | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/serial/driver b/Documentation/serial/driver
index 61d520dea4c6e13a..50f3d94ed50b341e 100644
--- a/Documentation/serial/driver
+++ b/Documentation/serial/driver
@@ -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
--
1.9.1
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