Hi Fabrizio, kernel test robot noticed the following build warnings: [auto build test WARNING on vkoul-dmaengine/next] [also build test WARNING on geert-renesas-drivers/renesas-clk robh/for-next linus/master v6.14-rc2 next-20250213] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Fabrizio-Castro/clk-renesas-r9a09g057-Add-entries-for-the-DMACs/20250213-061714 base: https://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine.git next patch link: https://lore.kernel.org/r/20250212221305.431716-7-fabrizio.castro.jz%40renesas.com patch subject: [PATCH v2 6/7] dmaengine: sh: rz-dmac: Add RZ/V2H(P) support config: powerpc64-randconfig-001-20250213 (https://download.01.org/0day-ci/archive/20250213/202502132123.1ePmN98r-lkp@xxxxxxxxx/config) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250213/202502132123.1ePmN98r-lkp@xxxxxxxxx/reproduce) 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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202502132123.1ePmN98r-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/dma/sh/rz-dmac.c:979:15: warning: cast to smaller integer type 'enum rz_dmac_type' from 'const void *' [-Wvoid-pointer-to-enum-cast] 979 | dmac->type = (enum rz_dmac_type)of_device_get_match_data(dmac->dev); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. vim +979 drivers/dma/sh/rz-dmac.c 962 963 static int rz_dmac_probe(struct platform_device *pdev) 964 { 965 const char *irqname = "error"; 966 struct dma_device *engine; 967 struct rz_dmac *dmac; 968 int channel_num; 969 int ret; 970 int irq; 971 u8 i; 972 973 dmac = devm_kzalloc(&pdev->dev, sizeof(*dmac), GFP_KERNEL); 974 if (!dmac) 975 return -ENOMEM; 976 977 dmac->dev = &pdev->dev; 978 platform_set_drvdata(pdev, dmac); > 979 dmac->type = (enum rz_dmac_type)of_device_get_match_data(dmac->dev); 980 981 ret = rz_dmac_parse_of(&pdev->dev, dmac); 982 if (ret < 0) 983 return ret; 984 985 dmac->channels = devm_kcalloc(&pdev->dev, dmac->n_channels, 986 sizeof(*dmac->channels), GFP_KERNEL); 987 if (!dmac->channels) 988 return -ENOMEM; 989 990 /* Request resources */ 991 dmac->base = devm_platform_ioremap_resource(pdev, 0); 992 if (IS_ERR(dmac->base)) 993 return PTR_ERR(dmac->base); 994 995 if (dmac->type == RZ_DMAC_RZG2L) { 996 dmac->ext_base = devm_platform_ioremap_resource(pdev, 1); 997 if (IS_ERR(dmac->ext_base)) 998 return PTR_ERR(dmac->ext_base); 999 } else { 1000 ret = rz_dmac_parse_of_icu(&pdev->dev, dmac); 1001 if (ret) 1002 return ret; 1003 } 1004 1005 /* Register interrupt handler for error */ 1006 irq = platform_get_irq_byname(pdev, irqname); 1007 if (irq < 0) 1008 return irq; 1009 1010 ret = devm_request_irq(&pdev->dev, irq, rz_dmac_irq_handler, 0, 1011 irqname, NULL); 1012 if (ret) { 1013 dev_err(&pdev->dev, "failed to request IRQ %u (%d)\n", 1014 irq, ret); 1015 return ret; 1016 } 1017 1018 /* Initialize the channels. */ 1019 INIT_LIST_HEAD(&dmac->engine.channels); 1020 1021 dmac->rstc = devm_reset_control_array_get_optional_exclusive(&pdev->dev); 1022 if (IS_ERR(dmac->rstc)) 1023 return dev_err_probe(&pdev->dev, PTR_ERR(dmac->rstc), 1024 "failed to get resets\n"); 1025 1026 pm_runtime_enable(&pdev->dev); 1027 ret = pm_runtime_resume_and_get(&pdev->dev); 1028 if (ret < 0) { 1029 dev_err(&pdev->dev, "pm_runtime_resume_and_get failed\n"); 1030 goto err_pm_disable; 1031 } 1032 1033 ret = reset_control_deassert(dmac->rstc); 1034 if (ret) 1035 goto err_pm_runtime_put; 1036 1037 for (i = 0; i < dmac->n_channels; i++) { 1038 ret = rz_dmac_chan_probe(dmac, &dmac->channels[i], i); 1039 if (ret < 0) 1040 goto err; 1041 } 1042 1043 /* Register the DMAC as a DMA provider for DT. */ 1044 ret = of_dma_controller_register(pdev->dev.of_node, rz_dmac_of_xlate, 1045 NULL); 1046 if (ret < 0) 1047 goto err; 1048 1049 /* Register the DMA engine device. */ 1050 engine = &dmac->engine; 1051 dma_cap_set(DMA_SLAVE, engine->cap_mask); 1052 dma_cap_set(DMA_MEMCPY, engine->cap_mask); 1053 rz_dmac_writel(dmac, DCTRL_DEFAULT, CHANNEL_0_7_COMMON_BASE + DCTRL); 1054 rz_dmac_writel(dmac, DCTRL_DEFAULT, CHANNEL_8_15_COMMON_BASE + DCTRL); 1055 1056 engine->dev = &pdev->dev; 1057 1058 engine->device_alloc_chan_resources = rz_dmac_alloc_chan_resources; 1059 engine->device_free_chan_resources = rz_dmac_free_chan_resources; 1060 engine->device_tx_status = dma_cookie_status; 1061 engine->device_prep_slave_sg = rz_dmac_prep_slave_sg; 1062 engine->device_prep_dma_memcpy = rz_dmac_prep_dma_memcpy; 1063 engine->device_config = rz_dmac_config; 1064 engine->device_terminate_all = rz_dmac_terminate_all; 1065 engine->device_issue_pending = rz_dmac_issue_pending; 1066 engine->device_synchronize = rz_dmac_device_synchronize; 1067 1068 engine->copy_align = DMAENGINE_ALIGN_1_BYTE; 1069 dma_set_max_seg_size(engine->dev, U32_MAX); 1070 1071 ret = dma_async_device_register(engine); 1072 if (ret < 0) { 1073 dev_err(&pdev->dev, "unable to register\n"); 1074 goto dma_register_err; 1075 } 1076 return 0; 1077 1078 dma_register_err: 1079 of_dma_controller_free(pdev->dev.of_node); 1080 err: 1081 channel_num = i ? i - 1 : 0; 1082 for (i = 0; i < channel_num; i++) { 1083 struct rz_dmac_chan *channel = &dmac->channels[i]; 1084 1085 dma_free_coherent(&pdev->dev, 1086 sizeof(struct rz_lmdesc) * DMAC_NR_LMDESC, 1087 channel->lmdesc.base, 1088 channel->lmdesc.base_dma); 1089 } 1090 1091 reset_control_assert(dmac->rstc); 1092 err_pm_runtime_put: 1093 pm_runtime_put(&pdev->dev); 1094 err_pm_disable: 1095 pm_runtime_disable(&pdev->dev); 1096 1097 return ret; 1098 } 1099 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
