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| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-03-14 16:16:11 +0100 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2016-03-31 00:58:13 -0600 |
| commit | 39c5144e5f0bc2dec9ebe3613d5f9c0f0b0bdc72 (patch) | |
| tree | e24cfddc8d2e502c016892ba5c74c1c3e3c67e41 | |
| parent | 4895b1d72117efea48ff51e94a26ce3cbde4d1a1 (diff) | |
serial: doc: Document .throttle()
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| -rw-r--r-- | Documentation/serial/driver | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/serial/driver b/Documentation/serial/driver index 61d520dea4c6..50f3d94ed50b 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 |