include/asm-generic/io.h:259:16: sparse: sparse: cast to restricted __le16

* include/asm-generic/io.h:259:16: sparse: sparse: cast to restricted __le16
@ 2021-11-19 20:52 ` kernel test robot
  0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2021-11-19 20:52 UTC (permalink / raw)
  To: Adrian Ratiu; +Cc: kbuild-all, linux-kernel, Mark Brown

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4c388a8e740d3235a194f330c8ef327deef710f6
commit: 6e1e90ec027509a7e8d4efbd77a65b32b5a8b3ec regmap: mmio: add config option to allow relaxed MMIO accesses
date:   1 year, 1 month ago
config: ia64-randconfig-s032-20211116 (attached as .config)
compiler: ia64-linux-gcc (GCC) 11.2.0
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: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6e1e90ec027509a7e8d4efbd77a65b32b5a8b3ec
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 6e1e90ec027509a7e8d4efbd77a65b32b5a8b3ec
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/base/regmap/ drivers/net/ethernet/stmicro/stmmac/ kernel/bpf/ lib/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
   drivers/base/regmap/regmap-mmio.c: note: in included file (through arch/ia64/include/asm/io.h, include/linux/io.h):
   include/asm-generic/io.h:291:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned short [usertype] value @@     got restricted __le16 [usertype] @@
   include/asm-generic/io.h:291:22: sparse:     expected unsigned short [usertype] value
   include/asm-generic/io.h:291:22: sparse:     got restricted __le16 [usertype]
   include/asm-generic/io.h:299:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int [usertype] value @@     got restricted __le32 [usertype] @@
   include/asm-generic/io.h:299:22: sparse:     expected unsigned int [usertype] value
   include/asm-generic/io.h:299:22: sparse:     got restricted __le32 [usertype]
   include/asm-generic/io.h:236:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long long [usertype] value @@     got restricted __le64 [usertype] @@
   include/asm-generic/io.h:236:22: sparse:     expected unsigned long long [usertype] value
   include/asm-generic/io.h:236:22: sparse:     got restricted __le64 [usertype]
   include/asm-generic/io.h:307:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long long [usertype] value @@     got restricted __le64 [usertype] @@
   include/asm-generic/io.h:307:22: sparse:     expected unsigned long long [usertype] value
   include/asm-generic/io.h:307:22: sparse:     got restricted __le64 [usertype]
>> include/asm-generic/io.h:259:16: sparse: sparse: cast to restricted __le16
   include/asm-generic/io.h:267:16: sparse: sparse: cast to restricted __le32
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:275:16: sparse: sparse: cast to restricted __le64

vim +259 include/asm-generic/io.h

1c8d29696f0d79 Arnd Bergmann 2014-11-11  254  
1c8d29696f0d79 Arnd Bergmann 2014-11-11  255  #ifndef readw_relaxed
8875c55437617f Sinan Kaya    2018-04-06  256  #define readw_relaxed readw_relaxed
8875c55437617f Sinan Kaya    2018-04-06  257  static inline u16 readw_relaxed(const volatile void __iomem *addr)
8875c55437617f Sinan Kaya    2018-04-06  258  {
8875c55437617f Sinan Kaya    2018-04-06 @259  	return __le16_to_cpu(__raw_readw(addr));
8875c55437617f Sinan Kaya    2018-04-06  260  }
1c8d29696f0d79 Arnd Bergmann 2014-11-11  261  #endif
1c8d29696f0d79 Arnd Bergmann 2014-11-11  262  

:::::: The code at line 259 was first introduced by commit
:::::: 8875c55437617fa4351070656bd78e17ed8284a5 io: change readX_relaxed() to remove barriers

:::::: TO: Sinan Kaya <okaya@codeaurora.org>
:::::: CC: Arnd Bergmann <arnd@arndb.de>

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

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