linux-kernel - [PATCH net-next 1/2] amd8111e: Mark PM functions as __maybe

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Date:   Tue, 30 Jun 2020 14:00:33 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Vaibhav Gupta <vaibhavgupta40@...il.com>,
        Don Fry <pcnet32@...ntier.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Nathan Chancellor <natechancellor@...il.com>
Subject: [PATCH net-next 1/2] amd8111e: Mark PM functions as __maybe_unused

In certain configurations without power management support, the
following warnings happen:

../drivers/net/ethernet/amd/amd8111e.c:1623:12: warning:
'amd8111e_resume' defined but not used [-Wunused-function]
 1623 | static int amd8111e_resume(struct device *dev_d)
      |            ^~~~~~~~~~~~~~~
../drivers/net/ethernet/amd/amd8111e.c:1584:12: warning:
'amd8111e_suspend' defined but not used [-Wunused-function]
 1584 | static int amd8111e_suspend(struct device *dev_d)
      |            ^~~~~~~~~~~~~~~~

Mark these functions as __maybe_unused to make it clear to the compiler
that this is going to happen based on the configuration, which is the
standard for these types of functions.

Fixes: 2caf751fe080 ("amd8111e: Convert to generic power management")
Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
---
 drivers/net/ethernet/amd/amd8111e.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/amd/amd8111e.c b/drivers/net/ethernet/amd/amd8111e.c
index c6591b33abcc..5d389a984394 100644
--- a/drivers/net/ethernet/amd/amd8111e.c
+++ b/drivers/net/ethernet/amd/amd8111e.c
@@ -1581,7 +1581,7 @@ static void amd8111e_tx_timeout(struct net_device *dev, unsigned int txqueue)
 		netif_wake_queue(dev);
 }
 
-static int amd8111e_suspend(struct device *dev_d)
+static int __maybe_unused amd8111e_suspend(struct device *dev_d)
 {
 	struct net_device *dev = dev_get_drvdata(dev_d);
 	struct amd8111e_priv *lp = netdev_priv(dev);
@@ -1620,7 +1620,7 @@ static int amd8111e_suspend(struct device *dev_d)
 	return 0;
 }
 
-static int amd8111e_resume(struct device *dev_d)
+static int __maybe_unused amd8111e_resume(struct device *dev_d)
 {
 	struct net_device *dev = dev_get_drvdata(dev_d);
 	struct amd8111e_priv *lp = netdev_priv(dev);

base-commit: ff91e9292fc5aafd9ee1dc44c03cff69a3b0f39f
-- 
2.27.0