Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following
build warning when CONFIG_PM_SLEEP is not selected. This is because
sleep PM callbacks defined by SIMPLE_DEV_PM_OPS are only used when
the CONFIG_PM_SLEEP is enabled.
drivers/video/backlight/backlight.c:211:12: warning: 'backlight_suspend' defined but not used [-Wunused-function]
drivers/video/backlight/backlight.c:225:12: warning: 'backlight_resume' defined but not used [-Wunused-function]
Signed-off-by: Jingoo Han <jg1.han@xxxxxxxxxxx>
---
drivers/video/backlight/backlight.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index cedbcbe..750807c 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -208,6 +208,7 @@ static ssize_t backlight_show_actual_brightness(struct device *dev,
static struct class *backlight_class;
+#ifdef CONFIG_PM_SLEEP
static int backlight_suspend(struct device *dev)
{
struct backlight_device *bd = to_backlight_device(dev);
@@ -235,6 +236,7 @@ static int backlight_resume(struct device *dev)
return 0;
}
+#endif
static SIMPLE_DEV_PM_OPS(backlight_class_dev_pm_ops, backlight_suspend,
backlight_resume);
--
1.7.10.4
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