linux-kernel - [PATCH -next] e1000e: Fix 'defined but not used' warning

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Date:   Fri, 19 Mar 2021 15:26:55 +0800
From:   Bixuan Cui <cuibixuan@...wei.com>
To:     <davem@...emloft.net>, <jesse.brandeburg@...el.com>,
        <anthony.l.nguyen@...el.com>, <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-next@...r.kernel.org>, <john.wanghui@...wei.com>
Subject: [PATCH -next] e1000e: Fix 'defined but not used' warning

Fix the warning while disable CONFIG_PM_SLEEP:

drivers/net/ethernet/intel/e1000e/netdev.c:6926:12: warning:
    ‘e1000e_pm_prepare’ defined but not used [-Wunused-function]
static int e1000e_pm_prepare(struct device *dev)
            ^~~~~~~~~~~~~~~~~

Signed-off-by: Bixuan Cui <cuibixuan@...wei.com>
---
 drivers/net/ethernet/intel/e1000e/netdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index f1c9debd9f3b..d2e4653536c5 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -6923,7 +6923,7 @@ static int __e1000_resume(struct pci_dev *pdev)
 	return 0;
 }
 
-static int e1000e_pm_prepare(struct device *dev)
+static __maybe_unused int e1000e_pm_prepare(struct device *dev)
 {
 	return pm_runtime_suspended(dev) &&
 		pm_suspend_via_firmware();
-- 
2.17.1