diff options
Diffstat (limited to 'drivers/tty/serial/fsl_lpuart.c')
| -rw-r--r-- | drivers/tty/serial/fsl_lpuart.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index c9519e649e82..1bd7ec9c81ea 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -3087,6 +3087,8 @@ static int lpuart_suspend_noirq(struct device *dev) static int lpuart_resume_noirq(struct device *dev) { struct lpuart_port *sport = dev_get_drvdata(dev); + struct tty_port *port = &sport->port.state->port; + bool wake_active; u32 stat; pinctrl_pm_select_default_state(dev); @@ -3098,6 +3100,12 @@ static int lpuart_resume_noirq(struct device *dev) if (lpuart_is_32(sport)) { stat = lpuart32_read(&sport->port, UARTSTAT); lpuart32_write(&sport->port, stat, UARTSTAT); + + /* check whether lpuart wakeup was triggered */ + wake_active = stat & (UARTSTAT_RDRF | UARTSTAT_RXEDGIF); + + if (wake_active && irqd_is_wakeup_set(irq_get_irq_data(sport->port.irq))) + pm_wakeup_event(tty_port_tty_get(port)->dev, 0); } } |