[PATCH net-next] sun/niu: add __maybe_unused attribute to PM functions

[Vaibhav Gupta]

The upgraded .suspend() and .resume() throw
"defined but not used [-Wunused-function]" warning for certain
configurations.

Mark them with "__maybe_unused" attribute.

Compile-tested only.

Fixes: b0db0cc2f695 ("sun/niu: use generic power management")
Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Vaibhav Gupta <vaibhavgupta40@xxxxxxxxx>
---
 drivers/net/ethernet/sun/niu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
index 68541c823245..b4e20d15d138 100644
--- a/drivers/net/ethernet/sun/niu.c
+++ b/drivers/net/ethernet/sun/niu.c
@@ -9873,7 +9873,7 @@ static void niu_pci_remove_one(struct pci_dev *pdev)
 	}
 }
 
-static int niu_suspend(struct device *dev_d)
+static int __maybe_unused niu_suspend(struct device *dev_d)
 {
 	struct net_device *dev = dev_get_drvdata(dev_d);
 	struct niu *np = netdev_priv(dev);
@@ -9900,7 +9900,7 @@ static int niu_suspend(struct device *dev_d)
 	return 0;
 }
 
-static int niu_resume(struct device *dev_d)
+static int __maybe_unused niu_resume(struct device *dev_d)
 {
 	struct net_device *dev = dev_get_drvdata(dev_d);
 	struct niu *np = netdev_priv(dev);
-- 
2.27.0