linux-kernel - drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1859:38: warning: unused variable 'mtk8195_jpegdec

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Date:   Thu, 9 Feb 2023 20:07:25 +0800
From:   kernel test robot <lkp@...el.com>
To:     kyrie wu <kyrie.wu@...iatek.com>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Hans Verkuil <hverkuil@...all.nl>,
        irui wang <irui.wang@...iatek.com>
Subject: drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1859:38:
 warning: unused variable 'mtk8195_jpegdec_drvdata'

Hi kyrie,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   0983f6bf2bfc0789b51ddf7315f644ff4da50acb
commit: dedc21500334b97b80d4ca37ab683cde214fcb03 media: mtk-jpegdec: add jpeg decode worker interface
date:   4 months ago
config: mips-randconfig-r005-20230209 (https://download.01.org/0day-ci/archive/20230209/202302092008.IgpNeNCW-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db0e6591612b53910a1b366863348bdb9d7d2fb1)
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
        # install mips cross compiling tool for clang build
        # apt-get install binutils-mipsel-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dedc21500334b97b80d4ca37ab683cde214fcb03
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout dedc21500334b97b80d4ca37ab683cde214fcb03
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/media/platform/mediatek/jpeg/ drivers/soc/renesas/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302092008.IgpNeNCW-lkp@intel.com

All warnings (new ones prefixed by >>):

   drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1818:38: warning: unused variable 'mt8173_jpeg_drvdata' [-Wunused-const-variable]
   static const struct mtk_jpeg_variant mt8173_jpeg_drvdata = {
                                        ^
   drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1833:38: warning: unused variable 'mtk_jpeg_drvdata' [-Wunused-const-variable]
   static const struct mtk_jpeg_variant mtk_jpeg_drvdata = {
                                        ^
   drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1848:32: warning: unused variable 'mtk8195_jpegenc_drvdata' [-Wunused-variable]
   static struct mtk_jpeg_variant mtk8195_jpegenc_drvdata = {
                                  ^
>> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c:1859:38: warning: unused variable 'mtk8195_jpegdec_drvdata' [-Wunused-const-variable]
   static const struct mtk_jpeg_variant mtk8195_jpegdec_drvdata = {
                                        ^
   4 warnings generated.


vim +/mtk8195_jpegdec_drvdata +1859 drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c

  1858	
> 1859	static const struct mtk_jpeg_variant mtk8195_jpegdec_drvdata = {
  1860		.formats = mtk_jpeg_dec_formats,
  1861		.num_formats = MTK_JPEG_DEC_NUM_FORMATS,
  1862		.qops = &mtk_jpeg_dec_qops,
  1863		.m2m_ops = &mtk_jpeg_multicore_dec_m2m_ops,
  1864		.dev_name = "mtk-jpeg-dec",
  1865		.ioctl_ops = &mtk_jpeg_dec_ioctl_ops,
  1866		.out_q_default_fourcc = V4L2_PIX_FMT_JPEG,
  1867		.cap_q_default_fourcc = V4L2_PIX_FMT_YUV420M,
  1868	};
  1869	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests