tty: serial: 8250: 8250_port: Move prototypes to shared location

Fixes the following W=1 kernel build warning(s):

 drivers/tty/serial/8250/8250_port.c:349:14: warning: no previous prototype for ‘au_serial_in’ [-Wmissing-prototypes]
 drivers/tty/serial/8250/8250_port.c:359:6: warning: no previous prototype for ‘au_serial_out’ [-Wmissing-prototypes]

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Mike Hudson <Exoray@isys.ca>
Cc: linux-serial@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201112105857.2078977-3-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_early.c b/drivers/tty/serial/8250/8250_early.c
index 70d7826788f533842e40ad929d371b7316f66b36..c171ce6db69102ed4911353226f7810cfddcf123 100644 (file)
--- a/drivers/tty/serial/8250/8250_early.c
+++ b/drivers/tty/serial/8250/8250_early.c
@@ -204,9 +204,6 @@ OF_EARLYCON_DECLARE(omap8250, "ti,omap4-uart", early_omap8250_setup);
 
 #ifdef CONFIG_SERIAL_8250_RT288X
 
-unsigned int au_serial_in(struct uart_port *p, int offset);
-void au_serial_out(struct uart_port *p, int offset, int value);
-
 static int __init early_au_setup(struct earlycon_device *dev, const char *opt)
 {
        dev->port.serial_in = au_serial_in;

diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 2b70f736b091dde3bf1898d96a16e8ca6d90f752..9e655055112d96b16d56f85e9ad473895ec7a0c4 100644 (file)
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -187,4 +187,9 @@ extern void serial8250_set_isa_configurator(void (*v)
                                        (int port, struct uart_port *up,
                                                u32 *capabilities));
 
+#ifdef CONFIG_SERIAL_8250_RT288X
+unsigned int au_serial_in(struct uart_port *p, int offset);
+void au_serial_out(struct uart_port *p, int offset, int value);
+#endif
+
 #endif