linux-kernel - [PATCH 2/6] net: stmmac: platform: fix build error with !CONFIG_PM

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Message-Id: <20211119025359.30815-3-Meng.Li@windriver.com>
Date:   Fri, 19 Nov 2021 10:53:55 +0800
From:   Meng Li <Meng.Li@...driver.com>
To:     stable@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
        mcoquelin.stm32@...il.com, linux@...linux.org.uk, andrew@...n.ch,
        qiangqing.zhang@....com
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        meng.li@...driver.com
Subject: [PATCH 2/6] net: stmmac: platform: fix build error with !CONFIG_PM_SLEEP

From: Wei Yongjun <weiyongjun1@...wei.com>

commit 7ec05a6035480f3a5934b2b31222620b2e906163 upstream

Get rid of the CONFIG_PM_SLEEP ifdefery to fix the build error
and use __maybe_unused for the suspend()/resume() hooks to avoid
build warning:

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:769:21:
 error: 'stmmac_runtime_suspend' undeclared here (not in a function); did you mean 'stmmac_suspend'?
  769 |  SET_RUNTIME_PM_OPS(stmmac_runtime_suspend, stmmac_runtime_resume, NULL)
      |                     ^~~~~~~~~~~~~~~~~~~~~~
./include/linux/pm.h:342:21: note: in definition of macro 'SET_RUNTIME_PM_OPS'
  342 |  .runtime_suspend = suspend_fn, \
      |                     ^~~~~~~~~~
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:769:45:
 error: 'stmmac_runtime_resume' undeclared here (not in a function)
  769 |  SET_RUNTIME_PM_OPS(stmmac_runtime_suspend, stmmac_runtime_resume, NULL)
      |                                             ^~~~~~~~~~~~~~~~~~~~~
./include/linux/pm.h:343:20: note: in definition of macro 'SET_RUNTIME_PM_OPS'
  343 |  .runtime_resume = resume_fn, \
      |                    ^~~~~~~~~

Fixes: 5ec55823438e ("net: stmmac: add clocks management for gmac driver")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Meng Li <Meng.Li@...driver.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 332afe8519f4..035f9aef4308 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -720,7 +720,6 @@ int stmmac_pltfr_remove(struct platform_device *pdev)
 }
 EXPORT_SYMBOL_GPL(stmmac_pltfr_remove);
 
-#ifdef CONFIG_PM_SLEEP
 /**
  * stmmac_pltfr_suspend
  * @dev: device pointer
@@ -728,7 +727,7 @@ EXPORT_SYMBOL_GPL(stmmac_pltfr_remove);
  * call the main suspend function and then, if required, on some platform, it
  * can call an exit helper.
  */
-static int stmmac_pltfr_suspend(struct device *dev)
+static int __maybe_unused stmmac_pltfr_suspend(struct device *dev)
 {
 	int ret;
 	struct net_device *ndev = dev_get_drvdata(dev);
@@ -749,7 +748,7 @@ static int stmmac_pltfr_suspend(struct device *dev)
  * the main resume function, on some platforms, it can call own init helper
  * if required.
  */
-static int stmmac_pltfr_resume(struct device *dev)
+static int __maybe_unused stmmac_pltfr_resume(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct stmmac_priv *priv = netdev_priv(ndev);
@@ -761,7 +760,7 @@ static int stmmac_pltfr_resume(struct device *dev)
 	return stmmac_resume(dev);
 }
 
-static int stmmac_runtime_suspend(struct device *dev)
+static int __maybe_unused stmmac_runtime_suspend(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct stmmac_priv *priv = netdev_priv(ndev);
@@ -771,14 +770,13 @@ static int stmmac_runtime_suspend(struct device *dev)
 	return 0;
 }
 
-static int stmmac_runtime_resume(struct device *dev)
+static int __maybe_unused stmmac_runtime_resume(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct stmmac_priv *priv = netdev_priv(ndev);
 
 	return stmmac_bus_clks_config(priv, true);
 }
-#endif /* CONFIG_PM_SLEEP */
 
 const struct dev_pm_ops stmmac_pltfr_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(stmmac_pltfr_suspend, stmmac_pltfr_resume)
-- 
2.17.1