Re: [PATCH 1/2] of: net: pass the dst buffer to of_get_mac_address()

[kernel test robot <lkp@intel.com>]

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Hi Michael,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20210401]
[cannot apply to sunxi/sunxi/for-next xlnx/master wireless-drivers-next/master wireless-drivers/master robh/for-next linus/master v5.12-rc6 v5.12-rc5 v5.12-rc4 v5.12-rc6]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Michael-Walle/of-net-support-non-platform-devices-in-of_get_mac_address/20210406-004940
base:    454c576c3f5e51d60f00a4ac0dde07f4f9d70e9d
config: x86_64-kexec (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/98b333048aecad0da786f9f8c3fe60674442b8cf
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Michael-Walle/of-net-support-non-platform-devices-in-of_get_mac_address/20210406-004940
        git checkout 98b333048aecad0da786f9f8c3fe60674442b8cf
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:630:1: error: conflicting types for 'stmmac_probe_config_dt'
     630 | stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
         | ^~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:20:
   drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h:15:1: note: previous declaration of 'stmmac_probe_config_dt' was here
      15 | stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac);
         | ^~~~~~~~~~~~~~~~~~~~~~
   In file included from include/linux/linkage.h:7,
                    from include/linux/kernel.h:8,
                    from arch/x86/include/asm/percpu.h:27,
                    from arch/x86/include/asm/current.h:6,
                    from include/linux/sched.h:12,
                    from include/linux/ratelimit.h:6,
                    from include/linux/dev_printk.h:16,
                    from include/linux/device.h:15,
                    from include/linux/platform_device.h:13,
                    from drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:11:
   drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:640:19: error: conflicting types for 'stmmac_probe_config_dt'
     640 | EXPORT_SYMBOL_GPL(stmmac_probe_config_dt);
         |                   ^~~~~~~~~~~~~~~~~~~~~~
   include/linux/export.h:98:21: note: in definition of macro '___EXPORT_SYMBOL'
      98 |  extern typeof(sym) sym;       \
         |                     ^~~
   include/linux/export.h:155:34: note: in expansion of macro '__EXPORT_SYMBOL'
     155 | #define _EXPORT_SYMBOL(sym, sec) __EXPORT_SYMBOL(sym, sec, "")
         |                                  ^~~~~~~~~~~~~~~
   include/linux/export.h:159:33: note: in expansion of macro '_EXPORT_SYMBOL'
     159 | #define EXPORT_SYMBOL_GPL(sym)  _EXPORT_SYMBOL(sym, "_gpl")
         |                                 ^~~~~~~~~~~~~~
   drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:640:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL'
     640 | EXPORT_SYMBOL_GPL(stmmac_probe_config_dt);
         | ^~~~~~~~~~~~~~~~~
   In file included from drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:20:
   drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h:15:1: note: previous declaration of 'stmmac_probe_config_dt' was here
      15 | stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac);
         | ^~~~~~~~~~~~~~~~~~~~~~


vim +/stmmac_probe_config_dt +630 drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c

d2ed0a7755fe14 Johan Hovold     2016-11-30  614  
d2ed0a7755fe14 Johan Hovold     2016-11-30  615  /**
d2ed0a7755fe14 Johan Hovold     2016-11-30  616   * stmmac_remove_config_dt - undo the effects of stmmac_probe_config_dt()
d2ed0a7755fe14 Johan Hovold     2016-11-30  617   * @pdev: platform_device structure
d2ed0a7755fe14 Johan Hovold     2016-11-30  618   * @plat: driver data platform structure
d2ed0a7755fe14 Johan Hovold     2016-11-30  619   *
d2ed0a7755fe14 Johan Hovold     2016-11-30  620   * Release resources claimed by stmmac_probe_config_dt().
d2ed0a7755fe14 Johan Hovold     2016-11-30  621   */
d2ed0a7755fe14 Johan Hovold     2016-11-30  622  void stmmac_remove_config_dt(struct platform_device *pdev,
d2ed0a7755fe14 Johan Hovold     2016-11-30  623  			     struct plat_stmmacenet_data *plat)
d2ed0a7755fe14 Johan Hovold     2016-11-30  624  {
4838a54050284d Jose Abreu       2019-06-14  625  	of_node_put(plat->phy_node);
a249708bc2aa1f Julia Lawall     2017-01-17  626  	of_node_put(plat->mdio_node);
d2ed0a7755fe14 Johan Hovold     2016-11-30  627  }
6a228452d11eaf Stefan Roese     2012-03-13  628  #else
402dae0bed98dd Joachim Eastwood 2015-07-17  629  struct plat_stmmacenet_data *
b0003ead75f394 Joachim Eastwood 2015-07-17 @630  stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
6a228452d11eaf Stefan Roese     2012-03-13  631  {
b2a8315a5c655f LABBE Corentin   2017-02-08  632  	return ERR_PTR(-EINVAL);
6a228452d11eaf Stefan Roese     2012-03-13  633  }
d2ed0a7755fe14 Johan Hovold     2016-11-30  634  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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