arch/arm64/mm/fault.c:743:17: sparse: sparse: incorrect type in argument 1 (different address spaces)

[kernel test robot <lkp@intel.com>]

tree:   https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git linux-5.4/lts/5.4.119-20.0009
head:   3bf5c3f6e32e9cfe13f09bac3ae93b8e39d472c1
commit: e55f6ef6b718005b3cac70670420798aaf0174c3 ampere/arm64: Add a fixup handler for alignment faults in aarch64 code
date:   2 years, 8 months ago
config: arm64-randconfig-r131-20240303 (https://download.01.org/0day-ci/archive/20240304/202403041121.daGsdMBe-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20240304/202403041121.daGsdMBe-lkp@intel.com/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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403041121.daGsdMBe-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   arch/arm64/mm/fault.c:416:24: sparse: sparse: incorrect type in return expression (different base types) @@     expected restricted vm_fault_t @@     got int @@
   arch/arm64/mm/fault.c:416:24: sparse:     expected restricted vm_fault_t
   arch/arm64/mm/fault.c:416:24: sparse:     got int
   arch/arm64/mm/fault.c:424:32: sparse: sparse: incorrect type in return expression (different base types) @@     expected restricted vm_fault_t @@     got int @@
   arch/arm64/mm/fault.c:424:32: sparse:     expected restricted vm_fault_t
   arch/arm64/mm/fault.c:424:32: sparse:     got int
   arch/arm64/mm/fault.c:426:32: sparse: sparse: incorrect type in return expression (different base types) @@     expected restricted vm_fault_t @@     got int @@
   arch/arm64/mm/fault.c:426:32: sparse:     expected restricted vm_fault_t
   arch/arm64/mm/fault.c:426:32: sparse:     got int
   arch/arm64/mm/fault.c:434:24: sparse: sparse: incorrect type in return expression (different base types) @@     expected restricted vm_fault_t @@     got int @@
   arch/arm64/mm/fault.c:434:24: sparse:     expected restricted vm_fault_t
   arch/arm64/mm/fault.c:434:24: sparse:     got int
   arch/arm64/mm/fault.c:554:13: sparse: sparse: restricted vm_fault_t degrades to integer
   arch/arm64/mm/fault.c:554:13: sparse: sparse: restricted vm_fault_t degrades to integer
   arch/arm64/mm/fault.c:616:39: sparse: sparse: restricted vm_fault_t degrades to integer
>> arch/arm64/mm/fault.c:743:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] <asn:2> * @@     got void * @@
   arch/arm64/mm/fault.c:743:17: sparse:     expected void volatile [noderef] <asn:2> *
   arch/arm64/mm/fault.c:743:17: sparse:     got void *

vim +743 arch/arm64/mm/fault.c

   730	
   731	static int align_dc_zva(unsigned long addr, struct pt_regs *regs)
   732	{
   733		int bs = read_cpuid(DCZID_EL0) & 0xf;
   734		int sz = 1 << (bs + 2);
   735	
   736		addr &= ~(sz - 1);
   737		if (is_ttbr0_addr(addr)) {
   738			for (; sz; sz--) {
   739				if (align_store(addr, 1, 0))
   740					return 1;
   741			}
   742		} else
 > 743			memset_io((void *)addr, 0, sz);
   744		return 0;
   745	}
   746	

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