[gerg-m68knommu:armnommu 3/3] drivers/mtd/maps/physmap-ixp4xx.c:47:9: sparse: sparse: incorrect type in assignment (different base types)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu.git armnommu
head:   b9d1c6c54795dbb93bb9f68f60a4da071e2ad418
commit: b9d1c6c54795dbb93bb9f68f60a4da071e2ad418 [3/3] ARM: versatile: support configuring versatile machine for no-MMU
config: arm-randconfig-r133-20260519 (https://download.01.org/0day-ci/archive/20260519/[email protected]/config)
compiler: arm-linux-gnueabi-gcc (GCC) 8.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260519/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

sparse warnings: (new ones prefixed by >>)
   drivers/mtd/maps/physmap-ixp4xx.c:42:16: sparse: sparse: cast to restricted __be16
   drivers/mtd/maps/physmap-ixp4xx.c:42:16: sparse: sparse: cast to restricted __be16
   drivers/mtd/maps/physmap-ixp4xx.c:42:16: sparse: sparse: cast to restricted __be16
   drivers/mtd/maps/physmap-ixp4xx.c:42:16: sparse: sparse: cast to restricted __be16
>> drivers/mtd/maps/physmap-ixp4xx.c:47:9: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned short volatile @@     got restricted __be16 [usertype] @@
   drivers/mtd/maps/physmap-ixp4xx.c:47:9: sparse:     expected unsigned short volatile
   drivers/mtd/maps/physmap-ixp4xx.c:47:9: sparse:     got restricted __be16 [usertype]

vim +47 drivers/mtd/maps/physmap-ixp4xx.c

2aba2f2a704d368 Linus Walleij 2019-10-21  39  
2aba2f2a704d368 Linus Walleij 2019-10-21  40  static inline u16 flash_read16(void __iomem *addr)
2aba2f2a704d368 Linus Walleij 2019-10-21  41  {
2aba2f2a704d368 Linus Walleij 2019-10-21 @42  	return be16_to_cpu(__raw_readw((void __iomem *)((unsigned long)addr ^ 0x2)));
2aba2f2a704d368 Linus Walleij 2019-10-21  43  }
2aba2f2a704d368 Linus Walleij 2019-10-21  44  
2aba2f2a704d368 Linus Walleij 2019-10-21  45  static inline void flash_write16(u16 d, void __iomem *addr)
2aba2f2a704d368 Linus Walleij 2019-10-21  46  {
2aba2f2a704d368 Linus Walleij 2019-10-21 @47  	__raw_writew(cpu_to_be16(d), (void __iomem *)((unsigned long)addr ^ 0x2));
2aba2f2a704d368 Linus Walleij 2019-10-21  48  }
2aba2f2a704d368 Linus Walleij 2019-10-21  49  

:::::: The code at line 47 was first introduced by commit
:::::: 2aba2f2a704d368583e832555b25d88265e62b6d mtd: physmap_of: add a hook for Intel IXP4xx flash probing

:::::: TO: Linus Walleij <[email protected]>
:::::: CC: Miquel Raynal <[email protected]>