[freescale-fslc:pr/208 8338/16182] drivers/staging/android/ion/ion_cma_heap.c:65:4: error: implicit declaration of function '__flush_dcache_area'; did you mean

[freescale-fslc:pr/208 8338/16182] drivers/staging/android/ion/ion_cma_heap.c:65:4: error: implicit declaration of function '__flush_dcache_area'; did you mean

[kernel test robot]

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tree:   https://github.com/Freescale/linux-fslc pr/208
head:   b8fcf77298682b8144432a871f7b98f1035249ba
commit: d39a68543c7002b7abd7f9df6d8f26fedda72ea5 [8338/16182] MGS-5565-1 staging: android: ion: Flush outer cache after zero CMA allocated memory
config: i386-randconfig-r003-20210110 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/Freescale/linux-fslc/commit/d39a68543c7002b7abd7f9df6d8f26fedda72ea5
        git remote add freescale-fslc https://github.com/Freescale/linux-fslc
        git fetch --no-tags freescale-fslc pr/208
        git checkout d39a68543c7002b7abd7f9df6d8f26fedda72ea5
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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

All errors (new ones prefixed by >>):

   drivers/staging/android/ion/ion_cma_heap.c: In function 'ion_cma_allocate':
>> drivers/staging/android/ion/ion_cma_heap.c:65:4: error: implicit declaration of function '__flush_dcache_area'; did you mean 'flush_dcache_page'? [-Werror=implicit-function-declaration]
      65 |    __flush_dcache_area(vaddr,PAGE_SIZE);
         |    ^~~~~~~~~~~~~~~~~~~
         |    flush_dcache_page
   cc1: some warnings being treated as errors


vim +65 drivers/staging/android/ion/ion_cma_heap.c

    57	
    58			while (nr_clear_pages > 0) {
    59				void *vaddr = kmap_atomic(page);
    60	
    61				memset(vaddr, 0, PAGE_SIZE);
    62	#ifdef CONFIG_ARM
    63				__cpuc_flush_dcache_area(vaddr,PAGE_SIZE);
    64	#else
  > 65				__flush_dcache_area(vaddr,PAGE_SIZE);
    66	#endif
    67				kunmap_atomic(vaddr);
    68				page++;
    69				nr_clear_pages--;
    70			}
    71	#ifdef CONFIG_ARM
    72			outer_flush_range(base, end);
    73	#endif
    74		} else {
    75			void *ptr = page_address(pages);
    76			memset(ptr, 0, size);
    77	#ifdef CONFIG_ARM
    78			__cpuc_flush_dcache_area(ptr,size);
    79			outer_flush_range(__pa(ptr), __pa(ptr) + size);
    80	#else
    81			__flush_dcache_area(ptr,size);
    82	#endif
    83		}
    84	
    85		table = kmalloc(sizeof(*table), GFP_KERNEL);
    86		if (!table)
    87			goto err;
    88	
    89		ret = sg_alloc_table(table, 1, GFP_KERNEL);
    90		if (ret)
    91			goto free_mem;
    92	
    93		sg_set_page(table->sgl, pages, size, 0);
    94	
    95		buffer->priv_virt = pages;
    96		buffer->sg_table = table;
    97		return 0;
    98	
    99	free_mem:
   100		kfree(table);
   101	err:
   102		cma_release(cma_heap->cma, pages, nr_pages);
   103		return -ENOMEM;
   104	}
   105	

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

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