[chrome-os:chromeos-6.6 0/8] drivers/dma-buf/heaps/restricted_heap_mtk.c:537:6: error: call to undeclared function 'of_get_flat_dt_prop'; ISO C99 and later do not support implicit function declarations

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

tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-6.6
head:   1fccbaa220247bcecbab7873df408563a5a4344f
commit: cebde616e78fae2ba1d76a7dd61392c07ed375ec [0/8] CHROMIUM: dma-buf: heaps: mtk_restricted: Add carveout memory support
config: i386-randconfig-051-20250223 (https://download.01.org/0day-ci/archive/20250223/202502230804.ZFViXboa-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250223/202502230804.ZFViXboa-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/202502230804.ZFViXboa-lkp@intel.com/

Note: the chrome-os/chromeos-6.6 HEAD 1fccbaa220247bcecbab7873df408563a5a4344f builds fine.
      It only hurts bisectability.

All errors (new ones prefixed by >>):

   drivers/dma-buf/heaps/restricted_heap_mtk.c:234:52: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
     233 |                 pr_err("%s: failed used 0x%x total_size 0x%lx needed 0x%lx\n",
         |                                                                        ~~~
         |                                                                        %zx
     234 |                         __func__, data->cma_used_size, heap->resv_size, buf->size);
         |                                                                         ^~~~~~~~~
   include/linux/printk.h:498:33: note: expanded from macro 'pr_err'
     498 |         printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
         |                                ~~~     ^~~~~~~~~~~
   include/linux/printk.h:455:60: note: expanded from macro 'printk'
     455 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
         |                                                     ~~~    ^~~~~~~~~~~
   include/linux/printk.h:427:19: note: expanded from macro 'printk_index_wrap'
     427 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ~~~~    ^~~~~~~~~~~
   drivers/dma-buf/heaps/restricted_heap_mtk.c:371:34: error: call to undeclared function 'phys_to_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     371 |                 sg_set_page(buf->sg_table.sgl, phys_to_page(pa_tee), buf->size, 0);
         |                                                ^
   drivers/dma-buf/heaps/restricted_heap_mtk.c:371:34: note: did you mean 'phys_to_virt'?
   arch/x86/include/asm/io.h:147:21: note: 'phys_to_virt' declared here
     147 | static inline void *phys_to_virt(phys_addr_t address)
         |                     ^
   drivers/dma-buf/heaps/restricted_heap_mtk.c:371:34: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'struct page *' [-Wint-conversion]
     371 |                 sg_set_page(buf->sg_table.sgl, phys_to_page(pa_tee), buf->size, 0);
         |                                                ^~~~~~~~~~~~~~~~~~~~
   include/linux/scatterlist.h:136:69: note: passing argument to parameter 'page' here
     136 | static inline void sg_set_page(struct scatterlist *sg, struct page *page,
         |                                                                     ^
   drivers/dma-buf/heaps/restricted_heap_mtk.c:409:19: error: call to undeclared function 'phys_to_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     409 |                 sg_set_page(sg, phys_to_page(tee_sg_item->pa),
         |                                 ^
   drivers/dma-buf/heaps/restricted_heap_mtk.c:409:19: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'struct page *' [-Wint-conversion]
     409 |                 sg_set_page(sg, phys_to_page(tee_sg_item->pa),
         |                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/scatterlist.h:136:69: note: passing argument to parameter 'page' here
     136 | static inline void sg_set_page(struct scatterlist *sg, struct page *page,
         |                                                                     ^
>> drivers/dma-buf/heaps/restricted_heap_mtk.c:537:6: error: call to undeclared function 'of_get_flat_dt_prop'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     537 |         if (of_get_flat_dt_prop(node, "reusable", NULL)) {
         |             ^
   1 warning and 5 errors generated.


vim +/of_get_flat_dt_prop +537 drivers/dma-buf/heaps/restricted_heap_mtk.c

   523	
   524	static int __init mtk_restricted_resv_init(struct reserved_mem *rmem)
   525	{
   526		struct restricted_heap *rheap = mtk_restricted_heaps, *rheap_resv = NULL;
   527		struct mtk_restricted_heap_data *data;
   528		unsigned long node = rmem->fdt_node;
   529		struct cma *cma = NULL;
   530		int ret, i;
   531	
   532		/* If restricted_region in the device tree has the 'reusable' attribute,
   533		 * it uses CMA to dynamically allocate memory. If restricted_region has
   534		 * the 'no-map' attribute, it uses carveout memory. This depends on the
   535		 * platform configuration.
   536		 */
 > 537		if (of_get_flat_dt_prop(node, "reusable", NULL)) {
   538			ret = cma_init_reserved_mem(rmem->base, rmem->size, 0, rmem->name, &cma);
   539			if (ret || !cma) {
   540				pr_err("%s: %s set up CMA fail. ret %d.\n", __func__, rmem->name, ret);
   541				return ret;
   542			}
   543		}
   544	
   545		for (i = 0; i < ARRAY_SIZE(mtk_restricted_heaps); i++, rheap++) {
   546			data = rheap->priv_data;
   547			if (data->mem_type == MTK_SECURE_MEMORY_TYPE_CM_CMA) {
   548				rheap_resv = rheap;
   549				rheap_resv->cma = cma;
   550				if (!cma)
   551					data->is_carveout = true;
   552				break;
   553			}
   554		}
   555		if (!rheap_resv)
   556			return -EINVAL;
   557	
   558		rheap_resv->resv_paddr = rmem->base;
   559		rheap_resv->resv_size = rmem->size;
   560		return 0;
   561	}
   562	

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