--- /dev/null
+From 2a48d96fd58a666ae231c3dd6fe4a458798ac645 Mon Sep 17 00:00:00 2001
+From: Joakim Zhang <qiangqing.zhang@nxp.com>
+Date: Thu, 9 Sep 2021 17:23:22 +0800
+Subject: net: stmmac: platform: fix build warning when with !CONFIG_PM_SLEEP
+
+From: Joakim Zhang <qiangqing.zhang@nxp.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@intel.com>
+Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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);