[kbuild-all] [lpieralisi-pci:pci/dwc 33/33] drivers/pci/controller/dwc/pcie-qcom.c:1305:30: sparse: sparse: incorrect type in initializer (different base types)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git pci/dwc head: 4c9398822106c366d88c8c68ddf44bd371d39961 commit: 4c9398822106c366d88c8c68ddf44bd371d39961 [33/33] PCI: qcom: Add support for configuring BDF to SID mapping for SM8250 config: sparc64-randconfig-s031-20201209 (attached as .config) compiler: sparc64-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/lpieralisi/pci.git/commit... git remote add lpieralisi-pci https://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git git fetch --no-tags lpieralisi-pci pci/dwc git checkout 4c9398822106c366d88c8c68ddf44bd371d39961 # 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=sparc64 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/pci/controller/dwc/pcie-qcom.c:1305:30: sparse: expected unsigned short [usertype] bdf_be drivers/pci/controller/dwc/pcie-qcom.c:1305:30: sparse: got restricted __be16 [usertype] vim +1305 drivers/pci/controller/dwc/pcie-qcom.c 1266 1267 static int qcom_pcie_config_sid_sm8250(struct qcom_pcie *pcie) 1268 { 1269 /* iommu map structure */ 1270 struct { 1271 u32 bdf; 1272 u32 phandle; 1273 u32 smmu_sid; 1274 u32 smmu_sid_len; 1275 } *map; 1276 void __iomem *bdf_to_sid_base = pcie->parf + PCIE20_PARF_BDF_TO_SID_TABLE_N; 1277 struct device *dev = pcie->pci->dev; 1278 u8 qcom_pcie_crc8_table[CRC8_TABLE_SIZE]; 1279 int i, nr_map, size = 0; 1280 u32 smmu_sid_base; 1281 1282 of_get_property(dev->of_node, "iommu-map", &size); 1283 if (!size) 1284 return 0; 1285 1286 map = kzalloc(size, GFP_KERNEL); 1287 if (!map) 1288 return -ENOMEM; 1289 1290 of_property_read_u32_array(dev->of_node, 1291 "iommu-map", (u32 *)map, size / sizeof(u32)); 1292 1293 nr_map = size / (sizeof(*map)); 1294 1295 crc8_populate_msb(qcom_pcie_crc8_table, QCOM_PCIE_CRC8_POLYNOMIAL); 1296 1297 /* Registers need to be zero out first */ 1298 memset_io(bdf_to_sid_base, 0, CRC8_TABLE_SIZE * sizeof(u32)); 1299 1300 /* Extract the SMMU SID base from the first entry of iommu-map */ 1301 smmu_sid_base = map[0].smmu_sid; 1302 1303 /* Look for an available entry to hold the mapping */ 1304 for (i = 0; i < nr_map; i++) { 1306 u32 val; 1307 u8 hash; 1308 1309 hash = crc8(qcom_pcie_crc8_table, (u8 *)&bdf_be, sizeof(bdf_be), 1310 0); 1311 1312 val = readl(bdf_to_sid_base + hash * sizeof(u32)); 1313 1314 /* If the register is already populated, look for next available entry */ 1315 while (val) { 1316 u8 current_hash = hash++; 1317 u8 next_mask = 0xff; 1318 1319 /* If NEXT field is NULL then update it with next hash */ 1320 if (!(val & next_mask)) { 1321 val |= (u32)hash; 1322 writel(val, bdf_to_sid_base + current_hash * sizeof(u32)); 1323 } 1324 1325 val = readl(bdf_to_sid_base + hash * sizeof(u32)); 1326 } 1327 1328 /* BDF [31:16] | SID [15:8] | NEXT [7:0] */ 1329 val = map[i].bdf << 16 | (map[i].smmu_sid - smmu_sid_base) << 8 | 0; 1330 writel(val, bdf_to_sid_base + hash * sizeof(u32)); 1331 } 1332 1333 kfree(map); 1334 1335 return 0; 1336 } 1337 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org