From a3bedc3bdc6e640141157636e253d63279860e23 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Thu, 14 Apr 2016 11:08:09 +0200 Subject: serial: doc: .(un)throttle() depends on hardware assisted flow control Document that .throttle() and .unthrottle() are relevant only if hardware assisted flow control is enabled. Signed-off-by: Geert Uytterhoeven Signed-off-by: Jonathan Corbet --- Documentation/serial/driver | 2 ++ 1 file changed, 2 insertions(+) (limited to 'Documentation/serial') diff --git a/Documentation/serial/driver b/Documentation/serial/driver index 03369d076ca2..03b703cf9318 100644 --- a/Documentation/serial/driver +++ b/Documentation/serial/driver @@ -135,6 +135,7 @@ hardware. 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. + This will be called only if hardware assisted flow control is enabled. Locking: none. @@ -142,6 +143,7 @@ hardware. 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. + This will be called only if hardware assisted flow control is enabled. Locking: none. -- cgit v1.2.3