[linux-next:master 13813/14297] arch/loongarch/kernel/relocate.c:166:38: sparse: sparse: incorrect type in initializer (different address spaces)

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   1716a175592aff9549a0c07aac8f9cadd03003f5
commit: e5f02b51fa0cb785e352e77271a65e96051b789b [13813/14297] LoongArch: Add support for kernel address space layout randomization (KASLR)
config: loongarch-randconfig-s053-20230226 (https://download.01.org/0day-ci/archive/20230301/202303011456.WEPeM0ZN-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=e5f02b51fa0cb785e352e77271a65e96051b789b
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout e5f02b51fa0cb785e352e77271a65e96051b789b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=loongarch olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=loongarch SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303011456.WEPeM0ZN-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> arch/loongarch/kernel/relocate.c:166:38: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected char *cmdline @@     got void [noderef] __iomem * @@
   arch/loongarch/kernel/relocate.c:166:38: sparse:     expected char *cmdline
   arch/loongarch/kernel/relocate.c:166:38: sparse:     got void [noderef] __iomem *

vim +166 arch/loongarch/kernel/relocate.c

   159	
   160	void * __init relocate_kernel(void)
   161	{
   162		unsigned long kernel_length;
   163		unsigned long random_offset = 0;
   164		void *location_new = _text; /* Default to original kernel start */
   165		void *kernel_entry = start_kernel; /* Default to original kernel entry point */
 > 166		char *cmdline = early_ioremap(fw_arg1, COMMAND_LINE_SIZE); /* Boot command line is passed in fw_arg1 */
   167	
   168		strscpy(boot_command_line, cmdline, COMMAND_LINE_SIZE);
   169	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests