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    drm/amdgpu: fix 32-bit compiler warning · 028423b0
    Arnd Bergmann 提交于
    The new amdgpu driver passes a user space pointer in a 64-bit structure
    member, which is the correct way to do it, but it attempts to
    directly cast it to a __user pointer in the kernel, which causes
    a warning in three places:
    
    drm/amd/amdgpu/amdgpu_cs.c: In function 'amdgpu_cs_parser_init':
    drm/amd/amdgpu/amdgpu_cs.c:180:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
      chunk_array_user = (uint64_t __user *)(cs->in.chunks);
    
    This changes all three to add an intermediate cast to 'unsigned long'
    as other drivers do. This avoids the warning and works correctly on
    both 32-bit and 64-bit architectures.
    
    Fixes: e60b344f ("drm/amdgpu: optimize amdgpu_parser_init")
    Reviewed-by: NChristian König <christian.koenig@amd.com>
    Signed-off-by: NArnd Bergmann <arnd@arndb.de>
    Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
    028423b0
amdgpu_cs.c 25.6 KB