netdev - Re: [PATCH 04/10] net: ax88796: Add block_input/output hooks to ax_plat

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Date:   Wed, 18 Apr 2018 12:53:21 +1200
From:   Michael Schmitz <schmitzmic@...il.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, netdev <netdev@...r.kernel.org>,
        "Linux/m68k" <linux-m68k@...r.kernel.org>,
        Michael Karcher <Michael.Karcher@...berlin.de>,
        Michael Karcher <kernel@...rcher.dialup.fu-berlin.de>
Subject: Re: [PATCH 04/10] net: ax88796: Add block_input/output hooks to ax_plat_data

I think this is a false positive - we're encouraged to provide the
full parameter list for functions, so the sreuct sk_buff* can't be
avoided.

Cheers,

  Michael


On Wed, Apr 18, 2018 at 6:46 AM, kbuild test robot <lkp@...el.com> wrote:
> Hi Michael,
>
> I love your patch! Perhaps something to improve:
>
> [auto build test WARNING on v4.16]
> [cannot apply to net-next/master net/master v4.17-rc1 next-20180417]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url:    https://github.com/0day-ci/linux/commits/Michael-Schmitz/New-network-driver-for-Amiga-X-Surf-100-m68k/20180417-141150
> config: arm-samsung (attached as .config)
> compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=arm
>
> All warnings (new ones prefixed by >>):
>
>    In file included from arch/arm/mach-s3c24xx/mach-anubis.c:42:0:
>>> include/net/ax88796.h:35:11: warning: 'struct sk_buff' declared inside parameter list will not be visible outside of this definition or declaration
>        struct sk_buff *skb, int ring_offset);
>               ^~~~~~~
>
> vim +35 include/net/ax88796.h
>
>     20
>     21  struct ax_plat_data {
>     22          unsigned int     flags;
>     23          unsigned char    wordlength;    /* 1 or 2 */
>     24          unsigned char    dcr_val;       /* default value for DCR */
>     25          unsigned char    rcr_val;       /* default value for RCR */
>     26          unsigned char    gpoc_val;      /* default value for GPOC */
>     27          u32             *reg_offsets;   /* register offsets */
>     28          u8              *mac_addr;      /* MAC addr (only used when
>     29                                             AXFLG_MAC_FROMPLATFORM is used */
>     30
>     31          /* uses default ax88796 buffer if set to NULL */
>     32          void (*block_output)(struct net_device *dev, int count,
>     33                          const unsigned char *buf, int star_page);
>     34          void (*block_input)(struct net_device *dev, int count,
>   > 35                          struct sk_buff *skb, int ring_offset);
>     36  };
>     37
>
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation