On Mon, Oct 31, 2016 at 05:26:46PM +0000, Ed Blake wrote:
> Expose set_ldisc() function so that it can be overridden with a
> platform specific implementation.
>
> Signed-off-by: Ed Blake <ed.blake@xxxxxxxxxx>
> ---
> drivers/tty/serial/8250/8250_core.c | 3 +++
> drivers/tty/serial/8250/8250_port.c | 12 ++++++++++--
> include/linux/serial_8250.h | 4 ++++
> include/linux/serial_core.h | 2 ++
> 4 files changed, 19 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
> index 8a4d53a..2b6dd3f 100644
> --- a/drivers/tty/serial/8250/8250_core.c
> +++ b/drivers/tty/serial/8250/8250_core.c
> @@ -830,6 +830,7 @@ static int serial8250_probe(struct platform_device *dev)
> uart.port.handle_irq = p->handle_irq;
> uart.port.handle_break = p->handle_break;
> uart.port.set_termios = p->set_termios;
> + uart.port.set_ldisc = p->set_ldisc;
> uart.port.get_mctrl = p->get_mctrl;
> uart.port.pm = p->pm;
> uart.port.dev = &dev->dev;
> @@ -1023,6 +1024,8 @@ int serial8250_register_8250_port(struct uart_8250_port *up)
> /* Possibly override set_termios call */
> if (up->port.set_termios)
> uart->port.set_termios = up->port.set_termios;
> + if (up->port.set_ldisc)
> + uart->port.set_ldisc = up->port.set_ldisc;
> if (up->port.get_mctrl)
> uart->port.get_mctrl = up->port.get_mctrl;
> if (up->port.set_mctrl)
> diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
> index 1bfb6fd..38c5856 100644
> --- a/drivers/tty/serial/8250/8250_port.c
> +++ b/drivers/tty/serial/8250/8250_port.c
> @@ -2690,8 +2690,7 @@ static unsigned int serial8250_get_baud_rate(struct uart_port *port,
> serial8250_do_set_termios(port, termios, old);
> }
>
> -static void
> -serial8250_set_ldisc(struct uart_port *port, struct ktermios *termios)
> +void serial8250_do_set_ldisc(struct uart_port *port, struct ktermios *termios)
> {
> if (termios->c_line == N_PPS) {
> port->flags |= UPF_HARDPPS_CD;
> @@ -2707,7 +2706,16 @@ static unsigned int serial8250_get_baud_rate(struct uart_port *port,
> }
> }
> }
> +EXPORT_SYMBOL(serial8250_do_set_ldisc);
EXPORT_SYMBOL_GPL()? (I have to ask...)
And who is going to use this?
thanks,
greg k-h
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