[PATCH] staging: greybus: arche-apb-ctrl: fix unused warnings on resume/suspend

[Jérémy Lefaure]

When CONFIG_PM_SLEEP is disabled, SIMPLE_DEV_PM_OPS does not use
arche_apb_ctrl_resume and arche_apb_ctrl_suspend functions:

drivers/staging/greybus/arche-apb-ctrl.c:478:12: warning:
‘arche_apb_ctrl_resume’ defined but not used [-Wunused-function]
 static int arche_apb_ctrl_resume(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~~~
drivers/staging/greybus/arche-apb-ctrl.c:464:12: warning:
‘arche_apb_ctrl_suspend’ defined but not used [-Wunused-function]
 static int arche_apb_ctrl_suspend(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~~~~

Adding __maybe_unused to the declaration of these functions removes the
warnings.

Signed-off-by: Jérémy Lefaure <jeremy.lefaure at lse.epita.fr>
---
 drivers/staging/greybus/arche-apb-ctrl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/greybus/arche-apb-ctrl.c b/drivers/staging/greybus/arche-apb-ctrl.c
index 3fda0cd6bb42..17fa29061e5b 100644
--- a/drivers/staging/greybus/arche-apb-ctrl.c
+++ b/drivers/staging/greybus/arche-apb-ctrl.c
@@ -461,7 +461,7 @@ static int arche_apb_ctrl_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int arche_apb_ctrl_suspend(struct device *dev)
+static int __maybe_unused arche_apb_ctrl_suspend(struct device *dev)
 {
 	/*
 	 * If timing profile permits, we may shutdown bridge
@@ -475,7 +475,7 @@ static int arche_apb_ctrl_suspend(struct device *dev)
 	return 0;
 }
 
-static int arche_apb_ctrl_resume(struct device *dev)
+static int __maybe_unused arche_apb_ctrl_resume(struct device *dev)
 {
 	/*
 	 * Atleast for ES2 we have to meet the delay requirement between
-- 
2.11.0