[PATCH 2/2] serial: stm32: enable / disable wake irqs for mcrtl_gpio wakeup sources

[Erwan Le Ray]

Enable mctrl_gpio wake_irq if device_may_wakeup when usart is suspended,
and disable mctrl_gpios wake_irq if device_may_wakeup when usart is
resumed.

Signed-off-by: Erwan Le Ray <erwan.leray at foss.st.com>

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 3244e7f6818c..df86c53e62a7 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -1708,6 +1708,7 @@ static int __maybe_unused stm32_usart_serial_en_wakeup(struct uart_port *port,
 	if (enable) {
 		stm32_usart_set_bits(port, ofs->cr1, USART_CR1_UESM);
 		stm32_usart_set_bits(port, ofs->cr3, USART_CR3_WUFIE);
+		mctrl_gpio_enable_irq_wake(stm32_port->gpios);
 
 		/*
 		 * When DMA is used for reception, it must be disabled before
@@ -1734,7 +1735,7 @@ static int __maybe_unused stm32_usart_serial_en_wakeup(struct uart_port *port,
 			if (ret)
 				return ret;
 		}
-
+		mctrl_gpio_disable_irq_wake(stm32_port->gpios);
 		stm32_usart_clr_bits(port, ofs->cr1, USART_CR1_UESM);
 		stm32_usart_clr_bits(port, ofs->cr3, USART_CR3_WUFIE);
 	}
-- 
2.17.1