linux-kernel - [l1k:smsc95xx_5.17 279/887] drivers/char/broadcom/rpivid-mem.c:52: warning: expecting prototype for rpivid(). Prototype was for DRIVER

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Date:   Fri, 8 Apr 2022 17:11:38 +0800
From:   kernel test robot <lkp@...el.com>
To:     popcornmix <popcornmix@...il.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [l1k:smsc95xx_5.17 279/887] drivers/char/broadcom/rpivid-mem.c:52:
 warning: expecting prototype for rpivid(). Prototype was for DRIVER_NAME()
 instead

Hi popcornmix,

First bad commit (maybe != root cause):

tree:   https://github.com/l1k/linux smsc95xx_5.17
head:   05d68ced287b30f62f18f95b5476135ef669804a
commit: 369c3a505f84640f4c10f4caf67c22bf5f9b1d56 [279/887] char: Add broadcom char drivers back to build files
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220408/202204081732.FRe9Lg4m-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/l1k/linux/commit/369c3a505f84640f4c10f4caf67c22bf5f9b1d56
        git remote add l1k https://github.com/l1k/linux
        git fetch --no-tags l1k smsc95xx_5.17
        git checkout 369c3a505f84640f4c10f4caf67c22bf5f9b1d56
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/char/broadcom/ drivers/gpu/drm/panel/

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

All warnings (new ones prefixed by >>):

>> drivers/char/broadcom/rpivid-mem.c:52: warning: expecting prototype for rpivid(). Prototype was for DRIVER_NAME() instead
--
>> drivers/char/broadcom/bcm2835-gpiomem.c:2: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * GPIO memory device driver


vim +52 drivers/char/broadcom/rpivid-mem.c

8900af03fcebd0 Jonathan Bell 2019-05-09  51  
8900af03fcebd0 Jonathan Bell 2019-05-09 @52  #define DRIVER_NAME "rpivid-mem"
8900af03fcebd0 Jonathan Bell 2019-05-09  53  #define DEVICE_MINOR 0
8900af03fcebd0 Jonathan Bell 2019-05-09  54  

:::::: The code at line 52 was first introduced by commit
:::::: 8900af03fcebd0065244b505c394ce12164624d8 drivers: char: add chardev for mmap'ing the RPiVid control registers

:::::: TO: Jonathan Bell <jonathan@...pberrypi.org>
:::::: CC: Dom Cobley <popcornmix@...il.com>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp