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Diffstat (limited to 'Documentation/serial/driver')
| -rw-r--r-- | Documentation/serial/driver | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/serial/driver b/Documentation/serial/driver index 88ad615dd33..77ba0afbe4d 100644 --- a/Documentation/serial/driver +++ b/Documentation/serial/driver @@ -186,6 +186,17 @@ hardware. Locking: port_sem taken. Interrupts: caller dependent. + flush_buffer(port) + Flush any write buffers, reset any DMA state and stop any + ongoing DMA transfers. + + This will be called whenever the port->info->xmit circular + buffer is cleared. + + Locking: port->lock taken. + Interrupts: locally disabled. + This call must not sleep + set_termios(port,termios,oldtermios) Change the port parameters, including word length, parity, stop bits. Update read_status_mask and ignore_status_mask to indicate |