pwm: pwm-tiehrpwm: add CONFIG_PM_SLEEP to suspend/resume functions

This patch adds CONFIG_PM_SLEEP to suspend/resume functions to fix
the following build warning when CONFIG_PM_SLEEP is not selected.

drivers/pwm/pwm-tiehrpwm.c:562:12: warning: 'ehrpwm_pwm_suspend' defined but not used [-Wunused-function]
drivers/pwm/pwm-tiehrpwm.c:580:12: warning: 'ehrpwm_pwm_resume' defined but not used [-Wunused-function

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c
index 8b4c86fa99c8..d058ba90845b 100644
--- a/drivers/pwm/pwm-tiehrpwm.c
+++ b/drivers/pwm/pwm-tiehrpwm.c
@@ -559,6 +559,7 @@ void ehrpwm_pwm_restore_context(struct ehrpwm_pwm_chip *pc)
         ehrpwm_write(pc->mmio_base, TBCTL, pc->ctx.tbctl);
 }
 
+#ifdef CONFIG_PM_SLEEP
 static int ehrpwm_pwm_suspend(struct device *dev)
 {
         struct ehrpwm_pwm_chip *pc = dev_get_drvdata(dev);
@@ -594,6 +595,7 @@ static int ehrpwm_pwm_resume(struct device *dev)
         ehrpwm_pwm_restore_context(pc);
         return 0;
 }
+#endif
 
 static SIMPLE_DEV_PM_OPS(ehrpwm_pwm_pm_ops, ehrpwm_pwm_suspend,
                 ehrpwm_pwm_resume);