diff options
Diffstat (limited to 'doc/bsp_howto/console.t')
| -rw-r--r-- | doc/bsp_howto/console.t | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/bsp_howto/console.t b/doc/bsp_howto/console.t index f04a67fcf1..555cf044fe 100644 --- a/doc/bsp_howto/console.t +++ b/doc/bsp_howto/console.t @@ -408,6 +408,12 @@ static ssize_t my_driver_interrupt_write(int minor, const char *buf, size_t n) * characters in the device data structure. */ + /* + * Termios will set n to zero to indicate that the transmitter is + * now inactive. The output buffer is empty in this case. The + * driver may disable the transmit interrupts now. + */ + return 0; @} @end group |