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| -rw-r--r-- | Documentation/tty.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/tty.txt b/Documentation/tty.txt index 048a8762cfb5..8e65c4498c52 100644 --- a/Documentation/tty.txt +++ b/Documentation/tty.txt @@ -132,6 +132,14 @@ set_termios() Notify the tty driver that the device's termios tty->termios. Previous settings should be passed in the "old" argument. + The API is defined such that the driver should return + the actual modes selected. This means that the + driver function is responsible for modifying any + bits in the request it cannot fulfill to indicate + the actual modes being used. A device with no + hardware capability for change (eg a USB dongle or + virtual port) can provide NULL for this method. + throttle() Notify the tty driver that input buffers for the line discipline are close to full, and it should somehow signal that no more characters should be |