drm/amdgpu: fix 32-bit compiler warning
authorArnd Bergmann <arnd@arndb.de>
Wed, 7 Oct 2015 07:41:27 +0000 (09:41 +0200)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 7 Oct 2015 13:59:18 +0000 (09:59 -0400)
commit028423b0d8fa27c30a46da4af2a5cab230369de6
tree6181d44b0dc211d3a846d95aacbb7f1e3bd9c11f
parent9a65e6866f039ff029acffc05195d54bc6ca6aeb
drm/amdgpu: fix 32-bit compiler warning

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: e60b344f6c0eff ("drm/amdgpu: optimize amdgpu_parser_init")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c