netdev - Re: [PATCH net-next v3 2/3] net: fsl: Allow most drivers to be built with COMPILE

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Date:   Wed, 16 Nov 2016 11:52:45 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org, davem@...emloft.net,
        mw@...ihalf.com, arnd@...db.de, gregory.clement@...e-electrons.com,
        Shaohui.Xie@...escale.com
Subject: Re: [PATCH net-next v3 2/3] net: fsl: Allow most drivers to be built
 with COMPILE_TEST

On 11/15/2016 07:23 PM, kbuild test robot wrote:
> Hi Florian,
> 
> [auto build test WARNING on net-next/master]
> 
> url:    https://github.com/0day-ci/linux/commits/Florian-Fainelli/net-gianfar_ptp-Rename-FS-bit-to-FIPERST/20161116-095805
> config: sh-allmodconfig (attached as .config)
> compiler: sh4-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
> reproduce:
>         wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=sh 
> 
> All warnings (new ones prefixed by >>):
> 
>    drivers/net/ethernet/freescale/fsl_pq_mdio.c: In function 'fsl_pq_mdio_remove':
>>> drivers/net/ethernet/freescale/fsl_pq_mdio.c:498:27: warning: unused variable 'priv' [-Wunused-variable]
>      struct fsl_pq_mdio_priv *priv = bus->priv;

Humm, this looks bogus, the variable is used see below:

>                               ^~~~
> 
> vim +/priv +498 drivers/net/ethernet/freescale/fsl_pq_mdio.c
> 
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  482  	return 0;
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  483  
> dd3b8a32 drivers/net/ethernet/freescale/fsl_pq_mdio.c Timur Tabi      2012-08-29  484  error:
> dd3b8a32 drivers/net/ethernet/freescale/fsl_pq_mdio.c Timur Tabi      2012-08-29  485  	if (priv->map)
> b3319b10 drivers/net/fsl_pq_mdio.c                    Anton Vorontsov 2009-12-30  486  		iounmap(priv->map);
> dd3b8a32 drivers/net/ethernet/freescale/fsl_pq_mdio.c Timur Tabi      2012-08-29  487  
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  488  	kfree(new_bus);
> dd3b8a32 drivers/net/ethernet/freescale/fsl_pq_mdio.c Timur Tabi      2012-08-29  489  
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  490  	return err;
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  491  }
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  492  
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  493  
> 5078ac79 drivers/net/ethernet/freescale/fsl_pq_mdio.c Timur Tabi      2012-08-29  494  static int fsl_pq_mdio_remove(struct platform_device *pdev)
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  495  {
> 5078ac79 drivers/net/ethernet/freescale/fsl_pq_mdio.c Timur Tabi      2012-08-29  496  	struct device *device = &pdev->dev;
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  497  	struct mii_bus *bus = dev_get_drvdata(device);
> b3319b10 drivers/net/fsl_pq_mdio.c                    Anton Vorontsov 2009-12-30 @498  	struct fsl_pq_mdio_priv *priv = bus->priv;
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  499  
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  500  	mdiobus_unregister(bus);
> 1577ecef drivers/net/fsl_pq_mdio.c                    Andy Fleming    2009-02-04  501  
> b3319b10 drivers/net/fsl_pq_mdio.c                    Anton Vorontsov 2009-12-30  502  	iounmap(priv->map);

Right here.

What compiler version is this?
-- 
Florian