serial/arc: Fix warning with CONSOLE_POLL

| drivers/tty/serial/arc_uart.c:516:2: warning: (near initialization for 'arc_serial_pops.poll_put_char') [enabled by default]

This partially undoes "serial/arc: use uart_console_write() helper" by
restoring the prototpye of poll helper and use a different one in
uart_console_write()

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 13 insertions, 7 deletions

diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index 3a504fb9c9e8..f8dc7d381956 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -442,18 +442,16 @@ static void arc_serial_config_port(struct uart_port *port, int flags)
                 port->type = PORT_ARC;
 }
 
-#if defined(CONFIG_CONSOLE_POLL) || defined(CONFIG_SERIAL_ARC_CONSOLE)
+#ifdef CONFIG_CONSOLE_POLL
 
-static void arc_serial_poll_putchar(struct uart_port *port, int chr)
+static void arc_serial_poll_putchar(struct uart_port *port, unsigned char chr)
 {
         while (!(UART_GET_STATUS(port) & TXEMPTY))
                 cpu_relax();
 
-        UART_SET_DATA(port, (unsigned char)chr);
+        UART_SET_DATA(port, chr);
 }
-#endif
 
-#ifdef CONFIG_CONSOLE_POLL
 static int arc_serial_poll_getchar(struct uart_port *port)
 {
         unsigned char chr;
@@ -519,6 +517,14 @@ static int arc_serial_console_setup(struct console *co, char *options)
         return uart_set_options(port, co, baud, parity, bits, flow);
 }
 
+static void arc_serial_console_putchar(struct uart_port *port, int ch)
+{
+        while (!(UART_GET_STATUS(port) & TXEMPTY))
+                cpu_relax();
+
+        UART_SET_DATA(port, (unsigned char)ch);
+}
+
 /*
  * Interrupts are disabled on entering
  */
@@ -529,7 +535,7 @@ static void arc_serial_console_write(struct console *co, const char *s,
         unsigned long flags;
 
         spin_lock_irqsave(&port->lock, flags);
-        uart_console_write(port, s, count, arc_serial_poll_putchar);
+        uart_console_write(port, s, count, arc_serial_console_putchar);
         spin_unlock_irqrestore(&port->lock, flags);
 }
 
@@ -548,7 +554,7 @@ static __init void arc_early_serial_write(struct console *con, const char *s,
 {
         struct earlycon_device *dev = con->data;
 
-        uart_console_write(&dev->port, s, n, arc_serial_poll_putchar);
+        uart_console_write(&dev->port, s, n, arc_serial_console_putchar);
 }
 
 static int __init arc_early_console_setup(struct earlycon_device *dev,