[ti:ti-rt-linux-5.4.y 4425/13576] drivers/dma-buf/heaps/carveout-heap.c:249:5: warning: no previous prototype for 'carveout_dma_heap_export'

[ti:ti-rt-linux-5.4.y 4425/13576] drivers/dma-buf/heaps/carveout-heap.c:249:5: warning: no previous prototype for 'carveout_dma_heap_export'

[kernel test robot]

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Hi Andrew,

FYI, the error/warning still remains.

tree:   git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-rt-linux-5.4.y
head:   cefb68e8a844702d06a3680ad206f4ecf0c655d6
commit: d5ba15e3647df3f2bece61d36cca4a536939623b [4425/13576] dma-buf: heaps: Add Carveout heap to dmabuf heaps
config: nios2-allyesconfig (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git
        git fetch --no-tags ti ti-rt-linux-5.4.y
        git checkout d5ba15e3647df3f2bece61d36cca4a536939623b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nios2 

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

All warnings (new ones prefixed by >>):

>> drivers/dma-buf/heaps/carveout-heap.c:249:5: warning: no previous prototype for 'carveout_dma_heap_export' [-Wmissing-prototypes]
     249 | int carveout_dma_heap_export(phys_addr_t base, size_t size, const char *name)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/carveout_dma_heap_export +249 drivers/dma-buf/heaps/carveout-heap.c

   248	
 > 249	int carveout_dma_heap_export(phys_addr_t base, size_t size, const char *name)
   250	{
   251		struct carveout_dma_heap *carveout_dma_heap;
   252		struct dma_heap_export_info exp_info;
   253		int ret;
   254	
   255		carveout_dma_heap = kzalloc(sizeof(*carveout_dma_heap), GFP_KERNEL);
   256		if (!carveout_dma_heap)
   257			return -ENOMEM;
   258	
   259		carveout_dma_heap->pool = gen_pool_create(PAGE_SHIFT, NUMA_NO_NODE);
   260		if (IS_ERR(carveout_dma_heap->pool)) {
   261			pr_err("Carveout Heap: Could not create memory pool\n");
   262			ret = PTR_ERR(carveout_dma_heap->pool);
   263			goto free_carveout_dma_heap;
   264		}
   265		ret = gen_pool_add(carveout_dma_heap->pool, base, size, NUMA_NO_NODE);
   266		if (ret) {
   267			pr_err("Carveout Heap: Could not add memory to pool\n");
   268			goto free_pool;
   269		}
   270	
   271		exp_info.name = name;
   272		exp_info.ops = &carveout_dma_heap_ops;
   273		exp_info.priv = carveout_dma_heap;
   274		carveout_dma_heap->heap = dma_heap_add(&exp_info);
   275		if (IS_ERR(carveout_dma_heap->heap)) {
   276			pr_err("Carveout Heap: Could not add DMA-Heap\n");
   277			ret = PTR_ERR(carveout_dma_heap->heap);
   278			goto free_pool;
   279		}
   280	
   281		pr_info("Carveout Heap: Exported %zu MiB at %pa\n", size / SZ_1M, &base);
   282	
   283		return 0;
   284	
   285	free_pool:
   286		gen_pool_destroy(carveout_dma_heap->pool);
   287	free_carveout_dma_heap:
   288		kfree(carveout_dma_heap);
   289		return ret;
   290	}
   291	

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

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