[tobetter:odroid-6.6.y 41/88] drivers/char/aml-gpiomem.c:129:22: error: call to undeclared function 'phys_mem_access_prot'; ISO C99 and later do not support implicit function declarations

[tobetter:odroid-6.6.y 41/88] drivers/char/aml-gpiomem.c:129:22: error: call to undeclared function 'phys_mem_access_prot'; ISO C99 and later do not support implicit function declarations

[kernel test robot]

tree:   https://github.com/tobetter/linux odroid-6.6.y
head:   506d08468b830f4f71052cf0f23e9f1053f9c9b6
commit: 5e7a0fcf547e3b4f54e37972019abef8e78192a7 [41/88] ODROID-N2/C4: char: Add /dev/gpiomem device
config: arm-randconfig-001-20241014 (https://download.01.org/0day-ci/archive/20241014/202410141526.fhtGrLIX-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 70e0a7e7e6a8541bcc46908c592eed561850e416)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241014/202410141526.fhtGrLIX-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/202410141526.fhtGrLIX-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/char/aml-gpiomem.c:51:
   In file included from include/linux/mm.h:2168:
   include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     522 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
>> drivers/char/aml-gpiomem.c:129:22: error: call to undeclared function 'phys_mem_access_prot'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     129 |         vma->vm_page_prot = phys_mem_access_prot(file, vma->vm_pgoff,
         |                             ^
   1 warning and 1 error generated.


vim +/phys_mem_access_prot +129 drivers/char/aml-gpiomem.c

   112	
   113	static int aml_gpiomem_mmap(struct file *file, struct vm_area_struct *vma)
   114	{
   115		int gpio_area = 0;
   116		unsigned long start = vma->vm_pgoff << PAGE_SHIFT;
   117		unsigned long end   = start + vma->vm_end - vma->vm_start;
   118	
   119		while (gpio_area < inst->gpio_area_count) {
   120			if ((inst->gpio_regs_phys[gpio_area].start >= start) &&
   121			    (inst->gpio_regs_phys[gpio_area].end   <= end))
   122				goto found;
   123			gpio_area++;
   124		}
   125	
   126		return -EACCES;
   127	
   128	found:
 > 129		vma->vm_page_prot = phys_mem_access_prot(file, vma->vm_pgoff,
   130				vma->vm_end - vma->vm_start,
   131				vma->vm_page_prot);
   132	
   133		vma->vm_ops = &aml_gpiomem_vm_ops;
   134	
   135		if (remap_pfn_range(vma, vma->vm_start,
   136					vma->vm_pgoff,
   137					vma->vm_end - vma->vm_start,
   138					vma->vm_page_prot)) {
   139			return -EAGAIN;
   140		}
   141	
   142		return 0;
   143	}
   144	

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https://github.com/intel/lkp-tests/wiki