linux-kernel - Re: [PATCH] dsa: ptp; mark dummy helpers as 'inline'

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Message-ID: <20180222124841.GA23008@lunn.ch>
Date:   Thu, 22 Feb 2018 13:48:41 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Brandon Streiff <brandon.streiff@...com>,
        Richard Cochran <richardcochran@...il.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dsa: ptp; mark dummy helpers as 'inline'

On Thu, Feb 22, 2018 at 12:44:40PM +0100, Arnd Bergmann wrote:
> Declaring a static function in a header leads to a warning every
> time that header gets included without the function being used:
> 
> In file included from drivers/net/dsa/mv88e6xxx/chip.c:42:
> drivers/net/dsa/mv88e6xxx/ptp.h:92:13: error: 'mv88e6xxx_hwtstamp_work' defined but not used [-Werror=unused-function]
>  static long mv88e6xxx_hwtstamp_work(struct ptp_clock_info *ptp)
> In file included from drivers/net/dsa/mv88e6xxx/chip.c:38:
> drivers/net/dsa/mv88e6xxx/global2.h:355:12: error: 'mv88e6xxx_g2_wait' defined but not used [-Werror=unused-function]
>  static int mv88e6xxx_g2_wait(struct mv88e6xxx_chip *chip, int reg, u16 mask)
>             ^~~~~~~~~~~~~~~~~
> drivers/net/dsa/mv88e6xxx/global2.h:350:12: error: 'mv88e6xxx_g2_update' defined but not used [-Werror=unused-function]
>  static int mv88e6xxx_g2_update(struct mv88e6xxx_chip *chip, int reg, u16 update)
>             ^~~~~~~~~~~~~~~~~~~
> drivers/net/dsa/mv88e6xxx/global2.h:345:12: error: 'mv88e6xxx_g2_write' defined but not used [-Werror=unused-function]
>  static int mv88e6xxx_g2_write(struct mv88e6xxx_chip *chip, int reg, u16 val)
>             ^~~~~~~~~~~~~~~~~~
> drivers/net/dsa/mv88e6xxx/global2.h:340:12: error: 'mv88e6xxx_g2_read' defined but not used [-Werror=unused-function]
>  static int mv88e6xxx_g2_read(struct mv88e6xxx_chip *chip, int reg, u16 *val)
> 
> This marks all such functions in dsa inline to make sure we don't warn
> about them.
> 
> Fixes: c6fe0ad2c349 ("net: dsa: mv88e6xxx: add rx/tx timestamping support")
> Fixes: 0d632c3d6fe3 ("net: dsa: mv88e6xxx: add accessors for PTP/TAI registers")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

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

    Andrew