drivers/gpu/drm/ttm/ttm_bo_util.c:427:28: sparse: sparse: incorrect type in argument 1 (different address spaces)

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b8f1fa2419c19c81bc386a6b350879ba54a573e1
commit: e3912d09bf8ddd8e274118d4c9cc550d9665115d drm/ttm: Introduce KUnit test
date:   3 months ago
config: nios2-randconfig-r133-20231119 (https://download.01.org/0day-ci/archive/20231119/202311191230.koBEsMLv-lkp@xxxxxxxxx/config)
compiler: nios2-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231119/202311191230.koBEsMLv-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311191230.koBEsMLv-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
   drivers/gpu/drm/ttm/ttm_bo_util.c:318:38: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void *virtual @@     got void [noderef] __iomem * @@
   drivers/gpu/drm/ttm/ttm_bo_util.c:318:38: sparse:     expected void *virtual
   drivers/gpu/drm/ttm/ttm_bo_util.c:318:38: sparse:     got void [noderef] __iomem *
   drivers/gpu/drm/ttm/ttm_bo_util.c:324:38: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void *virtual @@     got void [noderef] __iomem * @@
   drivers/gpu/drm/ttm/ttm_bo_util.c:324:38: sparse:     expected void *virtual
   drivers/gpu/drm/ttm/ttm_bo_util.c:324:38: sparse:     got void [noderef] __iomem *
>> drivers/gpu/drm/ttm/ttm_bo_util.c:427:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __iomem *addr @@     got void *virtual @@
   drivers/gpu/drm/ttm/ttm_bo_util.c:427:28: sparse:     expected void [noderef] __iomem *addr
   drivers/gpu/drm/ttm/ttm_bo_util.c:427:28: sparse:     got void *virtual

vim +427 drivers/gpu/drm/ttm/ttm_bo_util.c

ba4e7d973dd09b Thomas Hellstrom 2009-06-10  413  
a3185f91d0579b Christian König  2022-05-09  414  /**
a3185f91d0579b Christian König  2022-05-09  415   * ttm_bo_kunmap
a3185f91d0579b Christian König  2022-05-09  416   *
a3185f91d0579b Christian König  2022-05-09  417   * @map: Object describing the map to unmap.
a3185f91d0579b Christian König  2022-05-09  418   *
a3185f91d0579b Christian König  2022-05-09  419   * Unmaps a kernel map set up by ttm_bo_kmap.
a3185f91d0579b Christian König  2022-05-09  420   */
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  421  void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map)
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  422  {
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  423  	if (!map->virtual)
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  424  		return;
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  425  	switch (map->bo_kmap_type) {
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  426  	case ttm_bo_map_iomap:
ba4e7d973dd09b Thomas Hellstrom 2009-06-10 @427  		iounmap(map->virtual);
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  428  		break;
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  429  	case ttm_bo_map_vmap:
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  430  		vunmap(map->virtual);
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  431  		break;
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  432  	case ttm_bo_map_kmap:
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  433  		kunmap(map->page);
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  434  		break;
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  435  	case ttm_bo_map_premapped:
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  436  		break;
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  437  	default:
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  438  		BUG();
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  439  	}
d3116756a710e3 Christian König  2021-04-12  440  	ttm_mem_io_free(map->bo->bdev, map->bo->resource);
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  441  	map->virtual = NULL;
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  442  	map->page = NULL;
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  443  }
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  444  EXPORT_SYMBOL(ttm_bo_kunmap);
ba4e7d973dd09b Thomas Hellstrom 2009-06-10  445  

:::::: The code at line 427 was first introduced by commit
:::::: ba4e7d973dd09b66912ac4c0856add8b0703a997 drm: Add the TTM GPU memory manager subsystem.

:::::: TO: Thomas Hellstrom <thellstrom@xxxxxxxxxx>
:::::: CC: Dave Airlie <airlied@xxxxxxxxxx>

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