[shenki:arm-kexec-file 6/6] arch/arm/kernel/machine_kexec_file.c:104:8: error: implicit declaration of function 'of_kexec_alloc_and_setup_fdt'

[shenki:arm-kexec-file 6/6] arch/arm/kernel/machine_kexec_file.c:104:8: error: implicit declaration of function 'of_kexec_alloc_and_setup_fdt'

[kernel test robot]

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tree:   https://github.com/shenki/linux arm-kexec-file
head:   ded16619931dbef84d13bb8a1bae73e1870e2ddc
commit: ded16619931dbef84d13bb8a1bae73e1870e2ddc [6/6] ARM: kexec: Implement kexec zimage load
config: arm-randconfig-r004-20210504 (attached as .config)
compiler: arm-linux-gnueabi-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
        # https://github.com/shenki/linux/commit/ded16619931dbef84d13bb8a1bae73e1870e2ddc
        git remote add shenki https://github.com/shenki/linux
        git fetch --no-tags shenki arm-kexec-file
        git checkout ded16619931dbef84d13bb8a1bae73e1870e2ddc
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=arm 

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 >>):

   arch/arm/kernel/machine_kexec_file.c: In function 'kexec_zimage_load':
>> arch/arm/kernel/machine_kexec_file.c:104:8: error: implicit declaration of function 'of_kexec_alloc_and_setup_fdt' [-Werror=implicit-function-declaration]
     104 |  dtb = of_kexec_alloc_and_setup_fdt(image, 0, 0, cmdline, 0);
         |        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/arm/kernel/machine_kexec_file.c:104:6: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     104 |  dtb = of_kexec_alloc_and_setup_fdt(image, 0, 0, cmdline, 0);
         |      ^
   cc1: some warnings being treated as errors


vim +/of_kexec_alloc_and_setup_fdt +104 arch/arm/kernel/machine_kexec_file.c

    65	
    66	static void *kexec_zimage_load(struct kimage *image, char *kernel,
    67				       unsigned long kernel_len, char *initrd,
    68				       unsigned long initrd_len, char *cmdline,
    69				       unsigned long cmdline_len)
    70	{
    71		struct zimage_header *hdr;
    72		void *dtb;
    73		struct kexec_buf kbuf = {  };
    74		struct kexec_buf dtb_kbuf = {  };
    75		int size;
    76		int ret;
    77	
    78		hdr = (struct zimage_header *)kernel;
    79		size = le32_to_cpu(hdr->end) - le32_to_cpu(hdr->start);
    80	
    81		kbuf.image = image;
    82		kbuf.buf_min = 0;
    83		kbuf.buf_max = ULONG_MAX;
    84		kbuf.top_down = false;
    85	
    86		kbuf.buffer = kernel;
    87		kbuf.bufsz = kernel_len;
    88		kbuf.mem = KEXEC_BUF_MEM_UNKNOWN;
    89		kbuf.memsz = size;
    90		kbuf.buf_align = SZ_2M;
    91	
    92		ret = kexec_add_buffer(&kbuf);
    93		if (ret)
    94			return ERR_PTR(ret);
    95	
    96		pr_debug("Loading kernel at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
    97				kbuf.mem, kbuf.bufsz, kbuf.memsz);
    98	
    99		image->start = kbuf.mem;
   100	
   101		/* load dtb */
   102		/* TODO: initrd */
   103	//	dtb = of_kexec_alloc_and_setup_fdt(image, initrd_load_addr, initrd_len, cmdline, 0); */
 > 104		dtb = of_kexec_alloc_and_setup_fdt(image, 0, 0, cmdline, 0);
   105		if (!dtb) {
   106			pr_err("Preparing for new dtb failed\n");
   107			return ERR_PTR(ret);
   108		}
   109	
   110		/* trim it */
   111		fdt_pack(dtb);
   112		dtb_kbuf.image = image;
   113		dtb_kbuf.buffer = dtb;
   114		dtb_kbuf.bufsz = fdt_totalsize(dtb);
   115		dtb_kbuf.mem = KEXEC_BUF_MEM_UNKNOWN;
   116		dtb_kbuf.memsz = fdt_totalsize(dtb);
   117		dtb_kbuf.buf_align = SZ_2M;
   118		dtb_kbuf.buf_max = ULONG_MAX;
   119		dtb_kbuf.top_down = true;
   120	
   121		ret = kexec_add_buffer(&dtb_kbuf);
   122		if (ret)
   123			return ERR_PTR(ret);
   124		/* TODO: do we use these, or ignore them? */
   125	//	image->arch.dtb = dtb;
   126	//	image->arch.dtb_mem = dtb_kbuf.mem;
   127	
   128		pr_debug("Loading dtb at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
   129				dtb_kbuf.mem, dtb_kbuf.bufsz, dtb_kbuf.memsz);
   130	
   131		return NULL;
   132	}
   133	

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

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