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serial: 8250_port: Remove useless NULL checks

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After switching to HR timers for RS485 the NULL checks for the object
inside timer functions become useless.

Remove them to avoid confusion to static analyzers.

Fixes 6e0a5de213 ("serial: 8250: Use hrtimers for rs485 delays")
Cc: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2017-08-30 17:12:13 +03:00 committed by Greg Kroah-Hartman
parent 31cb9a8575
commit ae28d7402a
1 changed files with 4 additions and 4 deletions
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8
drivers/tty/serial/8250/8250_port.c
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@ -1450,13 +1450,13 @@ static enum hrtimer_restart serial8250_em485_handle_stop_tx(struct hrtimer *t)
struct uart_8250_em485 *em485;
struct uart_8250_port *p;
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 &&
em485->active_timer == &em485->stop_tx_timer) {
if (em485->active_timer == &em485->stop_tx_timer) {
__do_stop_tx_rs485(p);
em485->active_timer = NULL;
}
@ -1608,12 +1608,12 @@ static enum hrtimer_restart serial8250_em485_handle_start_tx(struct hrtimer *t)
struct uart_8250_em485 *em485;
struct uart_8250_port *p;
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 &&
em485->active_timer == &em485->start_tx_timer) {
if (em485->active_timer == &em485->start_tx_timer) {
__start_tx(&p->port);
em485->active_timer = NULL;
}