[xlnx:master 59/60] drivers/staging/xlnx_tsmux/xlnx_mpg2tsmux.c:1269:31: sparse: sparse: incorrect type in return expression (different base types)

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/c0b33b8ccd38096c815f2dd39746044d0aa079d3
        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 <redacted>


"sparse warnings: (new ones prefixed by >>)"

quoted

drivers/staging/xlnx_tsmux/xlnx_mpg2tsmux.c:1269:31: sparse: sparse: incorrect type in return expression (different base types) @@     expected restricted __poll_t @@     got int @@

   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 [off-list ref]
:::::: CC: Michal Simek [off-list ref]

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org