[PATCH v2 3/6] serial: 8250/mediatek: mark PM functions as __maybe_unused

From: Arnd Bergmann
Date: Thu Feb 11 2016 - 10:44:21 EST


The mtk8250_runtime_suspend function is not used when runtime PM is
disabled, so we get a warning about an unused function:

drivers/tty/serial/8250/8250_mtk.c:119:12: error: 'mtk8250_runtime_suspend' defined but not used [-Werror=unused-function]
static int mtk8250_runtime_suspend(struct device *dev)

This marks all the PM functions as __maybe_unused to avoid the warning,
and removes the #ifdef around the PM_SLEEP functions for consistency.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
---
drivers/tty/serial/8250/8250_mtk.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
index 78883ca64ddd..6ecc6e3e82dc 100644
--- a/drivers/tty/serial/8250/8250_mtk.c
+++ b/drivers/tty/serial/8250/8250_mtk.c
@@ -116,7 +116,7 @@ mtk8250_set_termios(struct uart_port *port, struct ktermios *termios,
tty_termios_encode_baud_rate(termios, baud, baud);
}

-static int mtk8250_runtime_suspend(struct device *dev)
+static int __maybe_unused mtk8250_runtime_suspend(struct device *dev)
{
struct mtk8250_data *data = dev_get_drvdata(dev);

@@ -126,7 +126,7 @@ static int mtk8250_runtime_suspend(struct device *dev)
return 0;
}

-static int mtk8250_runtime_resume(struct device *dev)
+static int __maybe_unused mtk8250_runtime_resume(struct device *dev)
{
struct mtk8250_data *data = dev_get_drvdata(dev);
int err;
@@ -262,8 +262,7 @@ static int mtk8250_remove(struct platform_device *pdev)
return 0;
}

-#ifdef CONFIG_PM_SLEEP
-static int mtk8250_suspend(struct device *dev)
+static int __maybe_unused mtk8250_suspend(struct device *dev)
{
struct mtk8250_data *data = dev_get_drvdata(dev);

@@ -272,7 +271,7 @@ static int mtk8250_suspend(struct device *dev)
return 0;
}

-static int mtk8250_resume(struct device *dev)
+static int __maybe_unused mtk8250_resume(struct device *dev)
{
struct mtk8250_data *data = dev_get_drvdata(dev);

@@ -280,7 +279,6 @@ static int mtk8250_resume(struct device *dev)

return 0;
}
-#endif /* CONFIG_PM_SLEEP */

static const struct dev_pm_ops mtk8250_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(mtk8250_suspend, mtk8250_resume)
--
2.7.0