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Message-Id: <20211129181715.699211611@linuxfoundation.org>
Date:   Mon, 29 Nov 2021 19:19:11 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Joakim Zhang <qiangqing.zhang@....com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 5.10 120/121] net: stmmac: platform: fix build warning when with !CONFIG_PM_SLEEP

From: Joakim Zhang <qiangqing.zhang@....com>

commit 2a48d96fd58a666ae231c3dd6fe4a458798ac645 upstream.

Use __maybe_unused for noirq_suspend()/noirq_resume() hooks to avoid
build warning with !CONFIG_PM_SLEEP:

>> drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:796:12: error: 'stmmac_pltfr_noirq_resume' defined but not used [-Werror=unused-function]
     796 | static int stmmac_pltfr_noirq_resume(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:775:12: error: 'stmmac_pltfr_noirq_suspend' defined but not used [-Werror=unused-function]
     775 | static int stmmac_pltfr_noirq_suspend(struct device *dev)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors

Fixes: 276aae377206 ("net: stmmac: fix system hang caused by eee_ctrl_timer during suspend/resume")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Joakim Zhang <qiangqing.zhang@....com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -779,7 +779,7 @@ static int __maybe_unused stmmac_runtime
 	return stmmac_bus_clks_config(priv, true);
 }
 
-static int stmmac_pltfr_noirq_suspend(struct device *dev)
+static int __maybe_unused stmmac_pltfr_noirq_suspend(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct stmmac_priv *priv = netdev_priv(ndev);
@@ -800,7 +800,7 @@ static int stmmac_pltfr_noirq_suspend(st
 	return 0;
 }
 
-static int stmmac_pltfr_noirq_resume(struct device *dev)
+static int __maybe_unused stmmac_pltfr_noirq_resume(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct stmmac_priv *priv = netdev_priv(ndev);


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