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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-04-14 11:08:09 +0200 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2016-04-15 15:59:06 -0600 |
| commit | a3bedc3bdc6e640141157636e253d63279860e23 (patch) | |
| tree | bbf1a96b92c20a6e1a5b9509144f9e55a2347e70 /Documentation/serial | |
| parent | d124fd3bb36ceb40438f10c897ce642386b74b72 (diff) | |
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 <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/serial')
| -rw-r--r-- | Documentation/serial/driver | 2 |
1 files changed, 2 insertions, 0 deletions
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. |