serial: 8250: Separate port initialization

Prepare for 8250 split; introduce serial8250_init_port() to initialize
port fields uncoupled from port structure storage.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 11 insertions, 4 deletions

diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c
index 06bb2ced2c94..e59fd1dc1ad5 100644
--- a/drivers/tty/serial/8250/8250_core.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -3134,6 +3134,16 @@ void serial8250_set_isa_configurator(
 }
 EXPORT_SYMBOL(serial8250_set_isa_configurator);
 
+static void serial8250_init_port(struct uart_8250_port *up)
+{
+        struct uart_port *port = &up->port;
+
+        spin_lock_init(&port->lock);
+        port->ops = &serial8250_pops;
+
+        up->cur_iotype = 0xFF;
+}
+
 static void __init serial8250_isa_init_ports(void)
 {
         struct uart_8250_port *up;
@@ -3152,11 +3162,10 @@ static void __init serial8250_isa_init_ports(void)
                 struct uart_port *port = &up->port;
 
                 port->line = i;
-                spin_lock_init(&port->lock);
+                serial8250_init_port(up);
 
                 init_timer(&up->timer);
                 up->timer.function = serial8250_timeout;
-                up->cur_iotype = 0xFF;
 
                 up->ops = &univ8250_driver_ops;
 
@@ -3165,8 +3174,6 @@ static void __init serial8250_isa_init_ports(void)
                  */
                 up->mcr_mask = ~ALPHA_KLUDGE_MCR;
                 up->mcr_force = ALPHA_KLUDGE_MCR;
-
-                port->ops = &serial8250_pops;
         }
 
         if (share_irqs)