linux-kernel - drivers/media/platform/samsung/exynos4-is/fimc-isp-video.h:35:6: warning: no previous prototype for 'fimc_isp_video_device

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Date:   Sat, 26 Mar 2022 04:21:48 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org
Subject: drivers/media/platform/samsung/exynos4-is/fimc-isp-video.h:35:6:
 warning: no previous prototype for 'fimc_isp_video_device_unregister'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   aa5b537b0ecc16992577b013f11112d54c7ce869
commit: 238c84f71120f41c45301359902a912a19370f3d media: platform: rename exynos4-is/ to samsung/exynos4-is/
date:   8 days ago
config: nios2-buildonly-randconfig-r006-20220325 (https://download.01.org/0day-ci/archive/20220326/202203260407.3uIXrNn4-lkp@intel.com/config)
compiler: nios2-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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=238c84f71120f41c45301359902a912a19370f3d
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 238c84f71120f41c45301359902a912a19370f3d
        # 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=nios2 SHELL=/bin/bash drivers/media/

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 >>):

   In file included from drivers/media/platform/samsung/exynos4-is/fimc-isp.c:25:
>> drivers/media/platform/samsung/exynos4-is/fimc-isp-video.h:35:6: warning: no previous prototype for 'fimc_isp_video_device_unregister' [-Wmissing-prototypes]
      35 | void fimc_isp_video_device_unregister(struct fimc_isp *isp,
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/fimc_isp_video_device_unregister +35 drivers/media/platform/samsung/exynos4-is/fimc-isp-video.h

34947b8aebe3f2 drivers/media/platform/exynos4-is/fimc-isp-video.h Sylwester Nawrocki 2013-12-20  34  
34947b8aebe3f2 drivers/media/platform/exynos4-is/fimc-isp-video.h Sylwester Nawrocki 2013-12-20 @35  void fimc_isp_video_device_unregister(struct fimc_isp *isp,
34947b8aebe3f2 drivers/media/platform/exynos4-is/fimc-isp-video.h Sylwester Nawrocki 2013-12-20  36  				enum v4l2_buf_type type)
34947b8aebe3f2 drivers/media/platform/exynos4-is/fimc-isp-video.h Sylwester Nawrocki 2013-12-20  37  {
34947b8aebe3f2 drivers/media/platform/exynos4-is/fimc-isp-video.h Sylwester Nawrocki 2013-12-20  38  }
34947b8aebe3f2 drivers/media/platform/exynos4-is/fimc-isp-video.h Sylwester Nawrocki 2013-12-20  39  #endif /* !CONFIG_VIDEO_EXYNOS4_ISP_DMA_CAPTURE */
34947b8aebe3f2 drivers/media/platform/exynos4-is/fimc-isp-video.h Sylwester Nawrocki 2013-12-20  40  

:::::: The code at line 35 was first introduced by commit
:::::: 34947b8aebe3f2d4eceb65fceafa92bf8dc97d96 [media] exynos4-is: Add the FIMC-IS ISP capture DMA driver

:::::: TO: Sylwester Nawrocki <s.nawrocki@...sung.com>
:::::: CC: Mauro Carvalho Chehab <m.chehab@...sung.com>

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