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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-07-24 12:36:56 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-07-24 12:36:56 -0700 |
| commit | b9f12a5d97f652c77ef6803dccd0d40d1290f5be (patch) | |
| tree | 8f58c8620ffef0d350a5ec022feda492a96b179a /drivers/tty/serial/serial_core.c | |
| parent | 9d8dc3e529a19e427fd379118acd132520935c5d (diff) | |
| parent | 9a3c4145af32125c5ee39c0272662b47307a8323 (diff) | |
Merge tag 'v3.16-rc6' into next
Merge with mainline to bring in changes to MFD to allow merging
ipaq-micro-ts driver.
Diffstat (limited to 'drivers/tty/serial/serial_core.c')
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index b68550d95a4..fbf6c5ad222 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -174,8 +174,12 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state, if (tty->termios.c_cflag & CBAUD) uart_set_mctrl(uport, TIOCM_RTS | TIOCM_DTR); } - - if (tty_port_cts_enabled(port)) { + /* + * if hw support flow control without software intervention, + * then skip the below check + */ + if (tty_port_cts_enabled(port) && + !(uport->flags & UPF_HARD_FLOW)) { spin_lock_irq(&uport->lock); if (!(uport->ops->get_mctrl(uport) & TIOCM_CTS)) tty->hw_stopped = 1; @@ -2239,6 +2243,9 @@ static void uart_poll_put_char(struct tty_driver *driver, int line, char ch) return; port = state->uart_port; + + if (ch == '\n') + port->ops->poll_put_char(port, '\r'); port->ops->poll_put_char(port, ch); } #endif @@ -2772,7 +2779,9 @@ void uart_handle_cts_change(struct uart_port *uport, unsigned int status) uport->icount.cts++; - if (tty_port_cts_enabled(port)) { + /* skip below code if the hw flow control is supported */ + if (tty_port_cts_enabled(port) && + !(uport->flags & UPF_HARD_FLOW)) { if (tty->hw_stopped) { if (status) { tty->hw_stopped = 0; |