tty: 8250, cleanup em485 timers

Initialize the variables directly by initializers in definitions. This
is expected/usual for these kind of callback.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210302062214.29627-12-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 167c1e3..9019f8f 100644 (file)
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -1466,13 +1466,11 @@ EXPORT_SYMBOL_GPL(serial8250_em485_stop_tx);
 
 static enum hrtimer_restart serial8250_em485_handle_stop_tx(struct hrtimer *t)
 {
-       struct uart_8250_em485 *em485;
-       struct uart_8250_port *p;
+       struct uart_8250_em485 *em485 = container_of(t, struct uart_8250_em485,
+                       stop_tx_timer);
+       struct uart_8250_port *p = em485->port;
        unsigned long flags;
 
-       em485 = container_of(t, struct uart_8250_em485, stop_tx_timer);
-       p = em485->port;
-
        serial8250_rpm_get(p);
        spin_lock_irqsave(&p->port.lock, flags);
        if (em485->active_timer == &em485->stop_tx_timer) {
@@ -1482,6 +1480,7 @@ static enum hrtimer_restart serial8250_em485_handle_stop_tx(struct hrtimer *t)
        }
        spin_unlock_irqrestore(&p->port.lock, flags);
        serial8250_rpm_put(p);
+
        return HRTIMER_NORESTART;
 }
 
@@ -1629,19 +1628,18 @@ static inline void start_tx_rs485(struct uart_port *port)
 
 static enum hrtimer_restart serial8250_em485_handle_start_tx(struct hrtimer *t)
 {
-       struct uart_8250_em485 *em485;
-       struct uart_8250_port *p;
+       struct uart_8250_em485 *em485 = container_of(t, struct uart_8250_em485,
+                       start_tx_timer);
+       struct uart_8250_port *p = em485->port;
        unsigned long flags;
 
-       em485 = container_of(t, struct uart_8250_em485, start_tx_timer);
-       p = em485->port;
-
        spin_lock_irqsave(&p->port.lock, flags);
        if (em485->active_timer == &em485->start_tx_timer) {
                __start_tx(&p->port);
                em485->active_timer = NULL;
        }
        spin_unlock_irqrestore(&p->port.lock, flags);
+
        return HRTIMER_NORESTART;
 }