[PATCH 05/10] serial: stm32: Use __maybe_unused instead of #if CONFIG_PM_SLEEP

[Erwan Le Ray]

Use __maybe_unused for power management related functionsinstead of
#if CONFIG_PM_SLEEP to simply the code.

fixes: 270e5a74fe4c ("serial: stm32: add wakeup mechanism")
Signed-off-by: Erwan Le Ray <erwan.leray@xxxxxx>

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 05d2ef6..aa3da1c 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -1200,8 +1200,8 @@ static int stm32_console_setup(struct console *co, char *options)
 	.cons		= STM32_SERIAL_CONSOLE,
 };
 
-#ifdef CONFIG_PM_SLEEP
-static void stm32_serial_enable_wakeup(struct uart_port *port, bool enable)
+static void __maybe_unused stm32_serial_enable_wakeup(struct uart_port *port,
+						      bool enable)
 {
 	struct stm32_port *stm32_port = to_stm32_port(port);
 	struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
@@ -1225,7 +1225,7 @@ static void stm32_serial_enable_wakeup(struct uart_port *port, bool enable)
 	}
 }
 
-static int stm32_serial_suspend(struct device *dev)
+static int __maybe_unused stm32_serial_suspend(struct device *dev)
 {
 	struct uart_port *port = dev_get_drvdata(dev);
 
@@ -1241,7 +1241,7 @@ static int stm32_serial_suspend(struct device *dev)
 	return 0;
 }
 
-static int stm32_serial_resume(struct device *dev)
+static int __maybe_unused stm32_serial_resume(struct device *dev)
 {
 	struct uart_port *port = dev_get_drvdata(dev);
 
@@ -1252,7 +1252,6 @@ static int stm32_serial_resume(struct device *dev)
 
 	return uart_resume_port(&stm32_usart_driver, port);
 }
-#endif /* CONFIG_PM_SLEEP */
 
 static int __maybe_unused stm32_serial_runtime_suspend(struct device *dev)
 {
-- 
1.9.1