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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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