netdev - Re: [PATCH drivers/net] #ifdef mdio_bus_phy_suspend() and mdio_bus_phy

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Message-ID: <20210303180422.GB1463@shell.armlinux.org.uk>
Date:   Wed, 3 Mar 2021 18:04:22 +0000
From:   Russell King - ARM Linux admin <linux@...linux.org.uk>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     andrew@...n.ch, hkallweit1@...il.com, davem@...emloft.net,
        kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH drivers/net] #ifdef mdio_bus_phy_suspend() and
 mdio_bus_phy_suspend()

On Wed, Mar 03, 2021 at 09:53:38AM -0800, Paul E. McKenney wrote:
> drivers/net: #ifdef mdio_bus_phy_suspend() and mdio_bus_phy_suspend()
> 
> The following build error is emitted by rcutorture builds of v5.12-rc1:
> 
> drivers/net/phy/phy_device.c:293:12: warning: ‘mdio_bus_phy_resume’ defined but not used [-Wunused-function]
> drivers/net/phy/phy_device.c:273:12: warning: ‘mdio_bus_phy_suspend’ defined but not used [-Wunused-function]
> 
> The problem is that these functions are only used by SIMPLE_DEV_PM_OPS(),
> which creates a dev_pm_ops structure only in CONFIG_PM_SLEEP=y kernels.
> Therefore, the mdio_bus_phy_suspend() and mdio_bus_phy_suspend() functions
> will be used only in CONFIG_PM_SLEEP=y kernels.  This commit therefore
> wraps them in #ifdef CONFIG_PM_SLEEP.

Arnd submitted a patch that Jakub has applied which fix these warnings
in a slightly different way. Please see
20210225145748.404410-1-arnd@...nel.org

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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