[chrome-os:chromeos-5.10 1/1] drivers/gpu/drm/evdi/evdi_gem.c:253:23: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast

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

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tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.10
head:   ae25dd46c5c2fecb4868af3a91418dea519deac9
commit: ae25dd46c5c2fecb4868af3a91418dea519deac9 [1/1] CHROMIUM: Import latest evdi driver
config: alpha-allyesconfig (attached as .config)
compiler: alpha-linux-gcc (GCC) 11.2.0
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-5.10
        git checkout ae25dd46c5c2fecb4868af3a91418dea519deac9
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=alpha 

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/gpu/drm/evdi/evdi_gem.c: In function 'evdi_gem_vmap':
   drivers/gpu/drm/evdi/evdi_gem.c:253:25: error: implicit declaration of function 'vmap'; did you mean 'kmap'? [-Werror=implicit-function-declaration]
     253 |         obj->vmapping = vmap(obj->pages, page_count, 0, PAGE_KERNEL);
         |                         ^~~~
         |                         kmap
>> drivers/gpu/drm/evdi/evdi_gem.c:253:23: warning: assignment to 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     253 |         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:274:17: error: implicit declaration of function 'vunmap'; did you mean 'kunmap'? [-Werror=implicit-function-declaration]
     274 |                 vunmap(obj->vmapping);
         |                 ^~~~~~
         |                 kunmap
   cc1: some warnings being treated as errors


vim +253 drivers/gpu/drm/evdi/evdi_gem.c

3e21cedd503fab Aleksander Miera 2018-03-15  227  
3e21cedd503fab Aleksander Miera 2018-03-15  228  int evdi_gem_vmap(struct evdi_gem_object *obj)
3e21cedd503fab Aleksander Miera 2018-03-15  229  {
3e21cedd503fab Aleksander Miera 2018-03-15  230  	int page_count = obj->base.size / PAGE_SIZE;
3e21cedd503fab Aleksander Miera 2018-03-15  231  	int ret;
3e21cedd503fab Aleksander Miera 2018-03-15  232  
3e21cedd503fab Aleksander Miera 2018-03-15  233  	if (obj->base.import_attach) {
79e3410df198df Sean Paul        2021-04-09  234  #if KERNEL_VERSION(5, 10, 0) <= LINUX_VERSION_CODE
5d42c7b3d93d6c Sean Paul        2021-04-09  235  		struct dma_buf_map map;
5d42c7b3d93d6c Sean Paul        2021-04-09  236  
5d42c7b3d93d6c Sean Paul        2021-04-09  237  		ret = dma_buf_vmap(obj->base.import_attach->dmabuf, &map);
5d42c7b3d93d6c Sean Paul        2021-04-09  238  		if (ret)
5d42c7b3d93d6c Sean Paul        2021-04-09  239  			return -ENOMEM;
5d42c7b3d93d6c Sean Paul        2021-04-09  240  		obj->vmapping = map.vaddr;
5d42c7b3d93d6c Sean Paul        2021-04-09  241  #else
3e21cedd503fab Aleksander Miera 2018-03-15  242  		obj->vmapping = dma_buf_vmap(obj->base.import_attach->dmabuf);
3e21cedd503fab Aleksander Miera 2018-03-15  243  		if (!obj->vmapping)
3e21cedd503fab Aleksander Miera 2018-03-15  244  			return -ENOMEM;
5d42c7b3d93d6c Sean Paul        2021-04-09  245  #endif
3e21cedd503fab Aleksander Miera 2018-03-15  246  		return 0;
3e21cedd503fab Aleksander Miera 2018-03-15  247  	}
3e21cedd503fab Aleksander Miera 2018-03-15  248  
67442e0531eb83 Guenter Roeck    2020-11-04  249  	ret = evdi_gem_get_pages(obj, GFP_KERNEL);
3e21cedd503fab Aleksander Miera 2018-03-15  250  	if (ret)
3e21cedd503fab Aleksander Miera 2018-03-15  251  		return ret;
3e21cedd503fab Aleksander Miera 2018-03-15  252  
3e21cedd503fab Aleksander Miera 2018-03-15 @253  	obj->vmapping = vmap(obj->pages, page_count, 0, PAGE_KERNEL);
3e21cedd503fab Aleksander Miera 2018-03-15  254  	if (!obj->vmapping)
3e21cedd503fab Aleksander Miera 2018-03-15  255  		return -ENOMEM;
3e21cedd503fab Aleksander Miera 2018-03-15  256  	return 0;
3e21cedd503fab Aleksander Miera 2018-03-15  257  }
3e21cedd503fab Aleksander Miera 2018-03-15  258  

:::::: The code at line 253 was first introduced by commit
:::::: 3e21cedd503fabd195cf407652bf87fd83e202ac drm/evdi: Add atomic evdi drm module

:::::: TO: Aleksander Miera <aleksander.miera@displaylink.com>
:::::: CC: Guenter Roeck <groeck@chromium.org>

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

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