tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   9791581c049c10929e97098374dd1716a81fefcc
commit: 005b73d0dd83c9cb9420a196bea8070cde30ecac m68knommu: __force type casts 
for raw IO access
date:   6 months ago
config: m68k-randconfig-s031-20210121 (attached as .config)
compiler: m68k-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: v0.6.3-208-g46a52ca4-dirty
        # 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=005b73d0dd83c9cb9420a196bea8070cde30ecac
        git remote add linus 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 005b73d0dd83c9cb9420a196bea8070cde30ecac
        # 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=m68k 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>


"sparse warnings: (new ones prefixed by >>)"
   drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted 
__le32
   drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted 
__le32
   drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted 
__le32
   drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted 
__le32
   drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted 
__le32
   drivers/mtd/nand/raw/sh_flctl.c:456:16: sparse: sparse: cast to restricted 
__le32
   drivers/mtd/nand/raw/sh_flctl.c:479:26: sparse: sparse: cast to restricted 
__be32
   drivers/mtd/nand/raw/sh_flctl.c:494:38: sparse: sparse: cast to restricted 
__be32
>> drivers/mtd/nand/raw/sh_flctl.c:510:17: sparse: sparse: incorrect type in 
>> assignment (different base types) @@     expected unsigned int volatile 
>> [usertype] @@     got restricted __be32 [usertype] @@
   drivers/mtd/nand/raw/sh_flctl.c:510:17: sparse:     expected unsigned int 
volatile [usertype]
   drivers/mtd/nand/raw/sh_flctl.c:510:17: sparse:     got restricted __be32 
[usertype]
   drivers/mtd/nand/raw/sh_flctl.c:523:24: sparse: sparse: incorrect type in 
assignment (different base types) @@     expected unsigned long @@     got 
restricted __be32 [usertype] @@
   drivers/mtd/nand/raw/sh_flctl.c:523:24: sparse:     expected unsigned long
   drivers/mtd/nand/raw/sh_flctl.c:523:24: sparse:     got restricted __be32 
[usertype]

vim +510 drivers/mtd/nand/raw/sh_flctl.c

6028aa01f759a1da drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14  500  
e8a9d8f31c592eea drivers/mtd/nand/sh_flctl.c Bastian Hecht     2012-10-19  501  
static void write_fiforeg(struct sh_flctl *flctl, int rlen,
e8a9d8f31c592eea drivers/mtd/nand/sh_flctl.c Bastian Hecht     2012-10-19  502  
                                                unsigned int offset)
6028aa01f759a1da drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14  503  
{
6028aa01f759a1da drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14  504  
        int i, len_4align;
e8a9d8f31c592eea drivers/mtd/nand/sh_flctl.c Bastian Hecht     2012-10-19  505  
        unsigned long *buf = (unsigned long *)&flctl->done_buff[offset];
6028aa01f759a1da drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14  506  
6028aa01f759a1da drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14  507  
        len_4align = (rlen + 3) / 4;
6028aa01f759a1da drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14  508  
        for (i = 0; i < len_4align; i++) {
6028aa01f759a1da drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14  509  
                wait_wfifo_ready(flctl);
e8a9d8f31c592eea drivers/mtd/nand/sh_flctl.c Bastian Hecht     2012-10-19 @510  
                writel(cpu_to_be32(buf[i]), FLDTFIFO(flctl));
6028aa01f759a1da drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14  511  
        }
6028aa01f759a1da drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14  512  
}
6028aa01f759a1da drivers/mtd/nand/sh_flctl.c Yoshihiro Shimoda 2008-10-14  513  

:::::: The code at line 510 was first introduced by commit
:::::: e8a9d8f31c592eea89f1b0d3fd425e7a96944e88 mtd: sh_flctl: Minor cleanups

:::::: TO: Bastian Hecht <[email protected]>
:::::: CC: Artem Bityutskiy <[email protected]>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

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