linux-kernel - [PATCH] tty: serial: fsl_lpuart: Use __maybe_unused instead of #if CONFIG_PM

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Date:   Fri, 15 May 2020 20:58:01 +0800
From:   Anson Huang <Anson.Huang@....com>
To:     gregkh@...uxfoundation.org, jslaby@...e.com,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Linux-imx@....com
Subject: [PATCH] tty: serial: fsl_lpuart: Use __maybe_unused instead of #if CONFIG_PM_SLEEP

Use __maybe_unused for power management related functions to simplify
the code.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 drivers/tty/serial/fsl_lpuart.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 6a9909e..cca485d 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -2662,8 +2662,7 @@ static int lpuart_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int lpuart_suspend(struct device *dev)
+static int __maybe_unused lpuart_suspend(struct device *dev)
 {
 	struct lpuart_port *sport = dev_get_drvdata(dev);
 	unsigned long temp;
@@ -2721,7 +2720,7 @@ static int lpuart_suspend(struct device *dev)
 	return 0;
 }
 
-static int lpuart_resume(struct device *dev)
+static int __maybe_unused lpuart_resume(struct device *dev)
 {
 	struct lpuart_port *sport = dev_get_drvdata(dev);
 	bool irq_wake = irqd_is_wakeup_set(irq_get_irq_data(sport->port.irq));
@@ -2752,7 +2751,6 @@ static int lpuart_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static SIMPLE_DEV_PM_OPS(lpuart_pm_ops, lpuart_suspend, lpuart_resume);
 
-- 
2.7.4