* drivers/gpu/drm/mediatek/mtk_drm_drv.c:1016 mtk_drm_of_ddp_path_build() error: uninitialized symbol 'ret'.
@ 2024-12-11 15:43 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-12-11 15:43 UTC (permalink / raw)
To: oe-kbuild; +Cc: lkp, Dan Carpenter
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: "Chun-Kuang Hu" <chunkuang.hu@kernel.org>
CC: Dave Airlie <airlied@redhat.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f92f4749861b06fed908d336b4dee1326003291b
commit: 9bed494cd627cecab1114ce0416c9ddb3ad66064 Merge tag 'mediatek-drm-next-6.13' of https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux into drm-next
date: 5 weeks ago
:::::: branch date: 13 hours ago
:::::: commit date: 5 weeks ago
config: microblaze-randconfig-r073-20241210 (https://download.01.org/0day-ci/archive/20241211/202412112300.L1cv0fpw-lkp@intel.com/config)
compiler: microblaze-linux-gcc (GCC) 14.2.0
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202412112300.L1cv0fpw-lkp@intel.com/
smatch warnings:
drivers/gpu/drm/mediatek/mtk_drm_drv.c:1016 mtk_drm_of_ddp_path_build() error: uninitialized symbol 'ret'.
vim +/ret +1016 drivers/gpu/drm/mediatek/mtk_drm_drv.c
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 991
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 992 static int mtk_drm_of_ddp_path_build(struct device *dev, struct device_node *node,
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 993 struct mtk_mmsys_driver_data *data)
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 994 {
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 995 struct device_node *ep_node;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 996 struct of_endpoint of_ep;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 997 bool output_present[MAX_CRTC] = { false };
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 998 int ret;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 999
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1000 for_each_endpoint_of_node(node, ep_node) {
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1001 ret = of_graph_parse_endpoint(ep_node, &of_ep);
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1002 if (ret) {
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1003 dev_err_probe(dev, ret, "Cannot parse endpoint\n");
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1004 break;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1005 }
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1006
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1007 if (of_ep.id >= MAX_CRTC) {
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1008 ret = dev_err_probe(dev, -EINVAL,
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1009 "Invalid endpoint%u number\n", of_ep.port);
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1010 break;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1011 }
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1012
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1013 output_present[of_ep.id] = true;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1014 }
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1015
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 @1016 if (ret) {
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1017 of_node_put(ep_node);
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1018 return ret;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1019 }
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1020
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1021 if (output_present[CRTC_MAIN]) {
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1022 ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_MAIN,
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1023 &data->main_path, &data->main_len);
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1024 if (ret && ret != -ENODEV)
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1025 return ret;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1026 }
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1027
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1028 if (output_present[CRTC_EXT]) {
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1029 ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_EXT,
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1030 &data->ext_path, &data->ext_len);
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1031 if (ret && ret != -ENODEV)
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1032 return ret;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1033 }
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1034
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1035 if (output_present[CRTC_THIRD]) {
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1036 ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_THIRD,
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1037 &data->third_path, &data->third_len);
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1038 if (ret && ret != -ENODEV)
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1039 return ret;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1040 }
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1041
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1042 return 0;
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1043 }
4c932840db1de4e AngeloGioacchino Del Regno 2024-10-17 1044
:::::: The code at line 1016 was first introduced by commit
:::::: 4c932840db1de4ea9639eceaaf6d59415b8a7d59 drm/mediatek: Implement OF graphs support for display paths
:::::: TO: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
:::::: CC: Chun-Kuang Hu <chunkuang.hu@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2024-12-11 15:43 drivers/gpu/drm/mediatek/mtk_drm_drv.c:1016 mtk_drm_of_ddp_path_build() error: uninitialized symbol 'ret' kernel test robot
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