Hi Yunfei,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on media-tree/master]
[also build test WARNING on next-20211028]
[cannot apply to v5.15-rc7]
[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/Yunfei-Dong/Support-multi-hardware-decode-using-of_platform_populate/20211029-115813
base:   git://linuxtv.org/media_tree.git master
config: riscv-randconfig-r042-20211028 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 5db7568a6a1fcb408eb8988abdaff2a225a8eb72)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/0day-ci/linux/commit/7a1387f1cbc2b5bd93234353927e1e588a06adc3
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Yunfei-Dong/Support-multi-hardware-decode-using-of_platform_populate/20211029-115813
        git checkout 7a1387f1cbc2b5bd93234353927e1e588a06adc3
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv 

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

All warnings (new ones prefixed by >>):

>> drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c:51:14: warning: cast to smaller integer type 'enum mtk_vdec_hw_id' from 'const void *' [-Wvoid-pointer-to-enum-cast]
                   comp_idx = (enum mtk_vdec_hw_id)of_id->data;
                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 warning generated.
--
>> drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_hw.c:138:13: warning: cast to smaller integer type 'enum mtk_vdec_hw_id' from 'const void *' [-Wvoid-pointer-to-enum-cast]
           comp_idx = (enum mtk_vdec_hw_id)of_id->data;
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 warning generated.


vim +51 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c

    28	
    29	static int mtk_vcodec_comp_device_check(struct mtk_vcodec_ctx *ctx)
    30	 {
    31		struct mtk_vcodec_dev *vdec_dev = ctx->dev;
    32		struct platform_device *pdev = vdec_dev->plat_dev;
    33		struct device_node *comp_node;
    34		enum mtk_vdec_hw_id comp_idx;
    35		const struct of_device_id *of_id;
    36		int i;
    37	
    38		for (i = 0; i < ARRAY_SIZE(mtk_vdec_hw_match); i++) {
    39			of_id = &mtk_vdec_hw_match[i];
    40			comp_node = of_find_compatible_node(NULL, NULL,
    41				of_id->compatible);
    42			if (!comp_node)
    43				continue;
    44	
    45			if (!of_device_is_available(comp_node)) {
    46				of_node_put(comp_node);
    47				dev_err(&pdev->dev, "Fail to get MMSYS node\n");
    48				continue;
    49			}
    50	
  > 51			comp_idx = (enum mtk_vdec_hw_id)of_id->data;
    52			vdec_dev->component_node[comp_idx] = comp_node;
    53	
    54			if (!test_bit(comp_idx, vdec_dev->hardware_bitmap)) {
    55				dev_err(&pdev->dev, "Vdec comp_idx is not ready %d.",
    56					comp_idx);
    57				return -EINVAL;
    58			}
    59		}
    60	
    61		return 0;
    62	}
    63	

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