[chrome-os:chromeos-6.1 143/143] drivers/gpu/drm/evdi/evdi_gem.c:278:23: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast

[chrome-os:chromeos-6.1 143/143] drivers/gpu/drm/evdi/evdi_gem.c:278:23: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast

[kernel test robot]

tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-6.1
head:   4c84ca78d36c41b436f7586426a05ae274ad7e53
commit: 4c84ca78d36c41b436f7586426a05ae274ad7e53 [143/143] CHROMIUM: drm/evdi: Port evdi from github.com/DisplayLink/evdi.git
config: mips-allyesconfig (https://download.01.org/0day-ci/archive/20230509/202305090048.S99VMp3k-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 12.1.0
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 chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel
        git fetch --no-tags chrome-os chromeos-6.1
        git checkout 4c84ca78d36c41b436f7586426a05ae274ad7e53
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/gpu/

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/202305090048.S99VMp3k-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/evdi/evdi_gem.c: In function 'evdi_gem_vmap':
   drivers/gpu/drm/evdi/evdi_gem.c:278:25: error: implicit declaration of function 'vmap'; did you mean 'kmap'? [-Werror=implicit-function-declaration]
     278 |         obj->vmapping = vmap(obj->pages, page_count, 0, PAGE_KERNEL);
         |                         ^~~~
         |                         kmap
>> drivers/gpu/drm/evdi/evdi_gem.c:278:23: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     278 |         obj->vmapping = vmap(obj->pages, page_count, 0, PAGE_KERNEL);
         |                       ^
   drivers/gpu/drm/evdi/evdi_gem.c: In function 'evdi_gem_vunmap':
   drivers/gpu/drm/evdi/evdi_gem.c:301:17: error: implicit declaration of function 'vunmap'; did you mean 'kunmap'? [-Werror=implicit-function-declaration]
     301 |                 vunmap(obj->vmapping);
         |                 ^~~~~~
         |                 kunmap
   cc1: some warnings being treated as errors


vim +278 drivers/gpu/drm/evdi/evdi_gem.c

   257	
   258	int evdi_gem_vmap(struct evdi_gem_object *obj)
   259	{
   260		int page_count = DIV_ROUND_UP(obj->base.size, PAGE_SIZE);
   261		int ret;
   262	
   263		if (evdi_drm_gem_object_use_import_attach(&obj->base)) {
   264			struct iosys_map map = IOSYS_MAP_INIT_VADDR(NULL);
   265	
   266			ret = dma_buf_vmap(obj->base.import_attach->dmabuf, &map);
   267			if (ret)
   268				return -ENOMEM;
   269			obj->vmapping = map.vaddr;
   270			obj->vmap_is_iomem = map.is_iomem;
   271			return 0;
   272		}
   273	
   274		ret = evdi_pin_pages(obj);
   275		if (ret)
   276			return ret;
   277	
 > 278		obj->vmapping = vmap(obj->pages, page_count, 0, PAGE_KERNEL);
   279		if (!obj->vmapping)
   280			return -ENOMEM;
   281		return 0;
   282	}
   283	

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