serial: liteuart: move polling putchar() function

The polling liteuart_putchar() function is only called from methods
conditionally enabled by CONFIG_SERIAL_LITEUART_CONSOLE. Move its
definition closer to the console code where it is dependent on the
same config option.

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20221123130500.1030189-15-gsomlo@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/liteuart.c b/drivers/tty/serial/liteuart.c
index 6e9f58d..ef557d5 100644 (file)
--- a/drivers/tty/serial/liteuart.c
+++ b/drivers/tty/serial/liteuart.c
@@ -70,14 +70,6 @@ static struct uart_driver liteuart_driver = {
 #endif
 };
 
-static void liteuart_putchar(struct uart_port *port, unsigned char ch)
-{
-       while (litex_read8(port->membase + OFF_TXFULL))
-               cpu_relax();
-
-       litex_write8(port->membase + OFF_RXTX, ch);
-}
-
 static void liteuart_update_irq_reg(struct uart_port *port, bool set, u8 mask)
 {
        struct liteuart_port *uart = to_liteuart_port(port);
@@ -377,6 +369,14 @@ static struct platform_driver liteuart_platform_driver = {
 
 #ifdef CONFIG_SERIAL_LITEUART_CONSOLE
 
+static void liteuart_putchar(struct uart_port *port, unsigned char ch)
+{
+       while (litex_read8(port->membase + OFF_TXFULL))
+               cpu_relax();
+
+       litex_write8(port->membase + OFF_RXTX, ch);
+}
+
 static void liteuart_console_write(struct console *co, const char *s,
        unsigned int count)
 {