Hi Vishal, First bad commit (maybe != root cause): tree: https://github.com/Xilinx/linux-xlnx master head: 043f8a226a752a1dd11f7ff64cee6dbe7334d394 commit: c0b33b8ccd38096c815f2dd39746044d0aa079d3 [59/60] staging: xlnxsync: Fix the uapi header license config: c6x-randconfig-s032-20210209 (attached as .config) compiler: c6x-elf-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: v0.6.3-215-g0fb77bb6-dirty # https://github.com/Xilinx/linux-xlnx/commit/c0b33b8ccd38096c815f2dd397460... git remote add xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xlnx master git checkout c0b33b8ccd38096c815f2dd39746044d0aa079d3 # 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=c6x 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/staging/xlnx_tsmux/xlnx_mpg2tsmux.c:1269:31: sparse: expected restricted __poll_t drivers/staging/xlnx_tsmux/xlnx_mpg2tsmux.c:1269:31: sparse: got int drivers/staging/xlnx_tsmux/xlnx_mpg2tsmux.c: note: in included file (through arch/c6x/include/generated/asm/io.h, include/linux/scatterlist.h, include/linux/dmapool.h): include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:179:15: sparse: sparse: cast to restricted __le32 include/asm-generic/io.h:225:22: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] value @@ got restricted __le32 [usertype] @@ include/asm-generic/io.h:225:22: sparse: expected unsigned int [usertype] value include/asm-generic/io.h:225:22: sparse: got restricted __le32 [usertype] vim +1269 drivers/staging/xlnx_tsmux/xlnx_mpg2tsmux.c 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1261 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1262 static __poll_t xlnx_tsmux_poll(struct file *fptr, poll_table *wait) 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1263 { 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1264 struct xlnx_tsmux *mpgmuxts = fptr->private_data; 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1265 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1266 poll_wait(fptr, &mpgmuxts->waitq, wait); 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1267 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1268 if (xlnx_tsmux_read(mpgmuxts, XTSMUX_LAST_NODE_PROCESSED)) 7b5bec9343e956 Venkateshwar Rao Gannavarapu 2020-02-14 @1269 return POLLIN | POLLPRI; 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1270 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1271 return 0; 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1272 } 2eca04dd61c998 Venkateshwar Rao Gannavarapu 2019-08-12 1273 :::::: The code at line 1269 was first introduced by commit :::::: 7b5bec9343e956c326e6cb9831da4f8636e04c6b staging: xlnx_tsmux: Add stream table update logic :::::: TO: Venkateshwar Rao Gannavarapu <venkateshwar.rao.gannavarapu(a)xilinx.com&gt; :::::: CC: Michal Simek <michal.simek(a)xilinx.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org