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    Subject[PATCH v3 2/3] serial: 8250: export serial8250_do_set_divisor()
    Some drivers could call serial8250_do_set_divisor() to complete its
    own set_divisor routine. Export this symbol for code reusing.

    Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
    ---
    drivers/tty/serial/8250/8250_port.c | 5 +++--
    include/linux/serial_8250.h | 3 +++
    2 files changed, 6 insertions(+), 2 deletions(-)

    diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
    index ce0dc17f18ee..945f8dc2d50f 100644
    --- a/drivers/tty/serial/8250/8250_port.c
    +++ b/drivers/tty/serial/8250/8250_port.c
    @@ -2580,8 +2580,8 @@ static unsigned char serial8250_compute_lcr(struct uart_8250_port *up,
    return cval;
    }

    -static void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
    - unsigned int quot, unsigned int quot_frac)
    +void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
    + unsigned int quot, unsigned int quot_frac)
    {
    struct uart_8250_port *up = up_to_u8250p(port);

    @@ -2612,6 +2612,7 @@ static void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
    serial_port_out(port, 0x2, quot_frac);
    }
    }
    +EXPORT_SYMBOL_GPL(serial8250_do_set_divisor);

    static void serial8250_set_divisor(struct uart_port *port, unsigned int baud,
    unsigned int quot, unsigned int quot_frac)
    diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
    index 76b9db71e489..18e21427bce4 100644
    --- a/include/linux/serial_8250.h
    +++ b/include/linux/serial_8250.h
    @@ -160,6 +160,9 @@ extern void serial8250_do_shutdown(struct uart_port *port);
    extern void serial8250_do_pm(struct uart_port *port, unsigned int state,
    unsigned int oldstate);
    extern void serial8250_do_set_mctrl(struct uart_port *port, unsigned int mctrl);
    +extern void serial8250_do_set_divisor(struct uart_port *port, unsigned int baud,
    + unsigned int quot,
    + unsigned int quot_frac);
    extern int fsl8250_handle_irq(struct uart_port *port);
    int serial8250_handle_irq(struct uart_port *port, unsigned int iir);
    unsigned char serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr);
    --
    2.18.0
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