Hi Dan, kernel test robot noticed the following build warnings: [auto build test WARNING on 40384c840ea1944d7c5a392e8975ed088ecf0b37] url: https://github.com/intel-lab-lkp/linux/commits/Dan-Williams/configfs-tsm-Namespace-TSM-report-symbols/20241206-064224 base: 40384c840ea1944d7c5a392e8975ed088ecf0b37 patch link: https://lore.kernel.org/r/173343743095.1074769.17985181033044298157.stgit%40dwillia2-xfh.jf.intel.com patch subject: [PATCH 06/11] samples/devsec: PCI device-security bus / endpoint sample config: i386-randconfig-r123-20241206 (https://download.01.org/0day-ci/archive/20241207/202412070726.Au4TQYYS-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241207/202412070726.Au4TQYYS-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/202412070726.Au4TQYYS-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): samples/devsec/bus.c: In function 'doe_process': >> samples/devsec/bus.c:172:18: warning: variable 'index' set but not used [-Wunused-but-set-variable] 172 | u8 type, index; | ^~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for TSM Depends on [n]: VIRT_DRIVERS [=n] Selected by [y]: - SAMPLE_DEVSEC [=y] && SAMPLES [=y] && PCI [=y] && X86 [=y] sparse warnings: (new ones prefixed by >>) >> samples/devsec/bus.c:539:37: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] subsystem_vendor_id @@ got restricted __le16 [usertype] @@ samples/devsec/bus.c:539:37: sparse: expected unsigned short [usertype] subsystem_vendor_id samples/devsec/bus.c:539:37: sparse: got restricted __le16 [usertype] >> samples/devsec/bus.c:546:34: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __le32 [usertype] devcap @@ got restricted __le16 [usertype] @@ samples/devsec/bus.c:546:34: sparse: expected restricted __le32 [usertype] devcap samples/devsec/bus.c:546:34: sparse: got restricted __le16 [usertype] >> samples/devsec/bus.c:609:59: sparse: sparse: cast truncates bits from constant value (1000000000 becomes 0) vim +/index +172 samples/devsec/bus.c 168 169 /* just indicate support for CMA */ 170 static void doe_process(struct devsec_dev_doe *doe) 171 { > 172 u8 type, index; 173 u16 vid; 174 175 vid = FIELD_GET(PCI_DOE_DATA_OBJECT_HEADER_1_VID, doe->req[0]); 176 type = FIELD_GET(PCI_DOE_DATA_OBJECT_HEADER_1_TYPE, doe->req[0]); 177 178 if (vid != PCI_VENDOR_ID_PCI_SIG) { 179 doe->read_ttl = -1; 180 return; 181 } 182 183 if (type != PCI_DOE_PROTOCOL_DISCOVERY) { 184 doe->read_ttl = -1; 185 return; 186 } 187 188 index = FIELD_GET(PCI_DOE_DATA_OBJECT_DISC_REQ_3_INDEX, doe->req[2]); 189 190 doe->rsp[0] = doe->req[0]; 191 doe->rsp[1] = FIELD_PREP(PCI_DOE_DATA_OBJECT_HEADER_2_LENGTH, 3); 192 doe->read_ttl = 3; 193 doe->rsp[2] = FIELD_PREP(PCI_DOE_DATA_OBJECT_DISC_RSP_3_VID, 194 PCI_VENDOR_ID_PCI_SIG) | 195 FIELD_PREP(PCI_DOE_DATA_OBJECT_DISC_RSP_3_PROTOCOL, 196 PCI_DOE_FEATURE_CMA) | 197 FIELD_PREP(PCI_DOE_DATA_OBJECT_DISC_RSP_3_NEXT_INDEX, 0); 198 } 199 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
