[hverkuil-media-tree:for-v6.1c 3/3] drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c:905:10: warning: cast to smaller integer type 'enum mdp_comp_type' from 'const void *'

From: kernel test robot
Date: Thu Aug 18 2022 - 22:06:37 EST


tree: git://linuxtv.org/hverkuil/media_tree.git for-v6.1c
head: b2273b84e1291c52279edf13b08744833c1faaab
commit: b2273b84e1291c52279edf13b08744833c1faaab [3/3] media: platform: mtk-mdp3: add MediaTek MDP3 driver
config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20220819/202208190957.uDT8XE6b-lkp@xxxxxxxxx/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project aed5e3bea138ce581d682158eb61c27b3cfdd6ec)
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 arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
git remote add hverkuil-media-tree git://linuxtv.org/hverkuil/media_tree.git
git fetch --no-tags hverkuil-media-tree for-v6.1c
git checkout b2273b84e1291c52279edf13b08744833c1faaab
# 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=arm64 SHELL=/bin/bash drivers/media/platform/mediatek/mdp3/ drivers/vfio/pci/hisilicon/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c:905:10: warning: cast to smaller integer type 'enum mdp_comp_type' from 'const void *' [-Wvoid-pointer-to-enum-cast]
type = (enum mdp_comp_type)of_id->data;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c:964:10: warning: cast to smaller integer type 'enum mdp_comp_type' from 'const void *' [-Wvoid-pointer-to-enum-cast]
type = (enum mdp_comp_type)of_id->data;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2 warnings generated.


vim +905 drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c

883
884 static int mdp_comp_sub_create(struct mdp_dev *mdp)
885 {
886 struct device *dev = &mdp->pdev->dev;
887 struct device_node *node, *parent;
888
889 parent = dev->of_node->parent;
890
891 for_each_child_of_node(parent, node) {
892 const struct of_device_id *of_id;
893 enum mdp_comp_type type;
894 int id, alias_id;
895 struct mdp_comp *comp;
896
897 of_id = of_match_node(mdp_sub_comp_dt_ids, node);
898 if (!of_id)
899 continue;
900 if (!of_device_is_available(node)) {
901 dev_dbg(dev, "Skipping disabled sub comp. %pOF\n", node);
902 continue;
903 }
904
> 905 type = (enum mdp_comp_type)of_id->data;
906 alias_id = mdp_comp_alias_id[type];
907 id = mdp_comp_get_id(type, alias_id);
908 if (id < 0) {
909 dev_err(dev,
910 "Fail to get sub comp. id: type %d alias %d\n",
911 type, alias_id);
912 return -EINVAL;
913 }
914 mdp_comp_alias_id[type]++;
915
916 comp = mdp_comp_create(mdp, node, id);
917 if (IS_ERR(comp))
918 return PTR_ERR(comp);
919 }
920
921 return 0;
922 }
923

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https://01.org/lkp