linux-kernel - Re: [PATCH] net: phy: make mdio_bus_phy_suspend/resume as __maybe

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Date:   Thu, 25 Feb 2021 23:53:20 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Heiner Kallweit <hkallweit1@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Russell King <linux@...linux.org.uk>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ioana Ciornei <ioana.ciornei@....com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: phy: make mdio_bus_phy_suspend/resume as
 __maybe_unused

On Thu, Feb 25, 2021 at 03:57:27PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> When CONFIG_PM_SLEEP is disabled, the compiler warns about unused
> functions:
> 
> drivers/net/phy/phy_device.c:273:12: error: unused function 'mdio_bus_phy_suspend' [-Werror,-Wunused-function]
> static int mdio_bus_phy_suspend(struct device *dev)
> drivers/net/phy/phy_device.c:293:12: error: unused function 'mdio_bus_phy_resume' [-Werror,-Wunused-function]
> static int mdio_bus_phy_resume(struct device *dev)
> 
> The logic is intentional, so just mark these two as __maybe_unused
> and remove the incorrect #ifdef.
> 
> Fixes: 4c0d2e96ba05 ("net: phy: consider that suspend2ram may cut off PHY power")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew