tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-testing head: 74e71964b1a9ffd34fa4b6ec8f2fa13e7cf0ac7a commit: 74abd1f2d49a2a9660eadd9486da333554c4a23b [100/117] bus: fsl-mc: make sure MC firmware is up and running config: arm64-randconfig-s032-20201209 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-179-ga00755aa-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git/comm... git remote add char-misc https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git git fetch --no-tags char-misc char-misc-testing git checkout 74abd1f2d49a2a9660eadd9486da333554c4a23b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "sparse warnings: (new ones prefixed by >>)" drivers/bus/fsl-mc/fsl-mc-bus.c:974:33: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *fsl_mc_regs @@ got void [noderef] __iomem * @@ drivers/bus/fsl-mc/fsl-mc-bus.c:974:33: sparse: expected void *fsl_mc_regs drivers/bus/fsl-mc/fsl-mc-bus.c:974:33: sparse: got void [noderef] __iomem * drivers/bus/fsl-mc/fsl-mc-bus.c:988:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@ drivers/bus/fsl-mc/fsl-mc-bus.c:988:17: sparse: expected void const volatile [noderef] __iomem *addr drivers/bus/fsl-mc/fsl-mc-bus.c:988:17: sparse: got void * drivers/bus/fsl-mc/fsl-mc-bus.c:988:17: sparse: expected void volatile [noderef] __iomem *addr drivers/bus/fsl-mc/fsl-mc-bus.c:988:17: sparse: got void * drivers/bus/fsl-mc/fsl-mc-bus.c:992:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *addr @@ got void * @@ drivers/bus/fsl-mc/fsl-mc-bus.c:992:40: sparse: expected void const volatile [noderef] __iomem *addr drivers/bus/fsl-mc/fsl-mc-bus.c:992:40: sparse: got void * vim +988 drivers/bus/fsl-mc/fsl-mc-bus.c 949 950 /** 951 * fsl_mc_bus_probe - callback invoked when the root MC bus is being 952 * added 953 */ 954 static int fsl_mc_bus_probe(struct platform_device *pdev) 955 { 956 struct fsl_mc_obj_desc obj_desc; 957 int error; 958 struct fsl_mc *mc; 959 struct fsl_mc_device *mc_bus_dev = NULL; 960 struct fsl_mc_io *mc_io = NULL; 961 int container_id; 962 phys_addr_t mc_portal_phys_addr; 963 u32 mc_portal_size, mc_stream_id; 964 struct resource *plat_res; 965 966 mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL); 967 if (!mc) 968 return -ENOMEM; 969 970 platform_set_drvdata(pdev, mc); 971 972 plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); 973 if (plat_res) { 975 if (IS_ERR(mc->fsl_mc_regs)) 976 return PTR_ERR(mc->fsl_mc_regs); 977 } 978 979 if (mc->fsl_mc_regs) { 980 /* 981 * Some bootloaders pause the MC firmware before booting the 982 * kernel so that MC will not cause faults as soon as the 983 * SMMU probes due to the fact that there's no configuration 984 * in place for MC. 985 * At this point MC should have all its SMMU setup done so make 986 * sure it is resumed. 987 */ 989 mc->fsl_mc_regs + FSL_MC_GCR1); 990 991 if (IS_ENABLED(CONFIG_ACPI) && !dev_of_node(&pdev->dev)) { 992 mc_stream_id = readl(mc->fsl_mc_regs + FSL_MC_FAPR); 993 /* 994 * HW ORs the PL and BMT bit, places the result in bit 995 * 14 of the StreamID and ORs in the ICID. Calculate it 996 * accordingly. 997 */ 998 mc_stream_id = (mc_stream_id & 0xffff) | 999 ((mc_stream_id & (MC_FAPR_PL | MC_FAPR_BMT)) ? 1000 BIT(14) : 0); 1001 error = acpi_dma_configure_id(&pdev->dev, 1002 DEV_DMA_COHERENT, 1003 &mc_stream_id); 1004 if (error) 1005 dev_warn(&pdev->dev, 1006 "failed to configure dma: %d.\n", 1007 error); 1008 } 1009 } 1010 1011 /* 1012 * Get physical address of MC portal for the root DPRC: 1013 */ 1014 plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1015 mc_portal_phys_addr = plat_res->start; 1016 mc_portal_size = resource_size(plat_res); 1017 error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr, 1018 mc_portal_size, NULL, 1019 FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, &mc_io); 1020 if (error < 0) 1021 return error; 1022 1023 error = mc_get_version(mc_io, 0, &mc_version); 1024 if (error != 0) { 1025 dev_err(&pdev->dev, 1026 "mc_get_version() failed with error %d\n", error); 1027 goto error_cleanup_mc_io; 1028 } 1029 1030 dev_info(&pdev->dev, "MC firmware version: %u.%u.%u\n", 1031 mc_version.major, mc_version.minor, mc_version.revision); 1032 1033 if (dev_of_node(&pdev->dev)) { 1034 error = get_mc_addr_translation_ranges(&pdev->dev, 1035 &mc->translation_ranges, 1036 &mc->num_translation_ranges); 1037 if (error < 0) 1038 goto error_cleanup_mc_io; 1039 } 1040 1041 error = dprc_get_container_id(mc_io, 0, &container_id); 1042 if (error < 0) { 1043 dev_err(&pdev->dev, 1044 "dprc_get_container_id() failed: %d\n", error); 1045 goto error_cleanup_mc_io; 1046 } 1047 1048 memset(&obj_desc, 0, sizeof(struct fsl_mc_obj_desc)); 1049 error = dprc_get_api_version(mc_io, 0, 1050 &obj_desc.ver_major, 1051 &obj_desc.ver_minor); 1052 if (error < 0) 1053 goto error_cleanup_mc_io; 1054 1055 obj_desc.vendor = FSL_MC_VENDOR_FREESCALE; 1056 strcpy(obj_desc.type, "dprc"); 1057 obj_desc.id = container_id; 1058 obj_desc.irq_count = 1; 1059 obj_desc.region_count = 0; 1060 1061 error = fsl_mc_device_add(&obj_desc, mc_io, &pdev->dev, &mc_bus_dev); 1062 if (error < 0) 1063 goto error_cleanup_mc_io; 1064 1065 mc->root_mc_bus_dev = mc_bus_dev; 1066 mc_bus_dev->dev.fwnode = pdev->dev.fwnode; 1067 return 0; 1068 1069 error_cleanup_mc_io: 1070 fsl_destroy_mc_io(mc_io); 1071 return error; 1072 } 1073 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org