Hi Stefan,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on robh/for-next]
[also build test ERROR on linus/master v5.15-rc1 next-20210915]
[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/Stefan-Wahren/add-Vertexcom-MSE102x-support/20210914-232404
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: x86_64-allyesconfig (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/09f1b772a438e7953db653d74e869c6981dd8d45
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Stefan-Wahren/add-Vertexcom-MSE102x-support/20210914-232404
        git checkout 09f1b772a438e7953db653d74e869c6981dd8d45
        # 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/vertexcom/mse102x.c:119:6: error: no previous prototype for 'mse102x_init_device_debugfs' [-Werror=missing-prototypes]
     119 | void mse102x_init_device_debugfs(struct mse102x_net_spi *mses)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/net/ethernet/vertexcom/mse102x.c:128:6: error: no previous prototype for 'mse102x_remove_device_debugfs' [-Werror=missing-prototypes]
     128 | void mse102x_remove_device_debugfs(struct mse102x_net_spi *mses)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/mse102x_init_device_debugfs +119 drivers/net/ethernet/vertexcom/mse102x.c

   118	
 > 119	void mse102x_init_device_debugfs(struct mse102x_net_spi *mses)
   120	{
   121		mses->device_root = debugfs_create_dir(dev_name(&mses->mse102x.ndev->dev),
   122						       NULL);
   123	
   124		debugfs_create_file("info", S_IFREG | 0444, mses->device_root, mses,
   125				    &mse102x_info_fops);
   126	}
   127	
 > 128	void mse102x_remove_device_debugfs(struct mse102x_net_spi *mses)
   129	{
   130		debugfs_remove_recursive(mses->device_root);
   131	}
   132	

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