these two enumerated types are same for now. both of them might change in the 
future.

I have not used clang, but would  .block_id =  (int)head->block fix your 
warning? If such change is acceptable, I can make one then.

Thanks
xinhui


-----Original Message-----
From: Nathan Chancellor <natechancel...@gmail.com> 
Sent: 2019年3月20日 8:54
To: Deucher, Alexander <alexander.deuc...@amd.com>; Koenig, Christian 
<christian.koe...@amd.com>; Zhou, David(ChunMing) <david1.z...@amd.com>; Pan, 
Xinhui <xinhui....@amd.com>
Cc: amd-...@lists.freedesktop.org; dri-devel@lists.freedesktop.org; 
linux-ker...@vger.kernel.org; clang-built-li...@googlegroups.com
Subject: Clang warning in drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c

Hi all,

The introduction of this file in commit dbd249c24427 ("drm/amdgpu: add 
amdgpu_ras.c to support ras (v2)") introduces the following Clang
warnings:

drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:544:23: warning: implicit conversion 
from enumeration type 'enum amdgpu_ras_block' to different enumeration type 
'enum ta_ras_block' [-Wenum-conversion]
                        .block_id =  head->block,
                                     ~~~~~~^~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:545:24: warning: implicit conversion 
from enumeration type 'enum amdgpu_ras_error_type' to different enumeration 
type 'enum ta_ras_error_type' [-Wenum-conversion]
                        .error_type = head->type,
                                      ~~~~~~^~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:549:23: warning: implicit conversion 
from enumeration type 'enum amdgpu_ras_block' to different enumeration type 
'enum ta_ras_block' [-Wenum-conversion]
                        .block_id =  head->block,
                                     ~~~~~~^~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:550:24: warning: implicit conversion 
from enumeration type 'enum amdgpu_ras_error_type' to different enumeration 
type 'enum ta_ras_error_type' [-Wenum-conversion]
                        .error_type = head->type,
                                      ~~~~~~^~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:650:26: warning: implicit conversion 
from enumeration type 'enum amdgpu_ras_block' to different enumeration type 
'enum ta_ras_block' [-Wenum-conversion]
                .block_id = info->head.block,
                            ~~~~~~~~~~~^~~~~
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:651:35: warning: implicit conversion 
from enumeration type 'enum amdgpu_ras_error_type' to different enumeration 
type 'enum ta_ras_error_type' [-Wenum-conversion]
                .inject_error_type = info->head.type,
                                     ~~~~~~~~~~~^~~~
6 warnings generated.

Normally, I would sent a fix for this myself but I am not entirely sure why 
these two enumerated types exist when one would do since they have the same 
values minus the prefix. In fact, the ta_ras_{block,error_type} values are 
never used aside from being defined. Some clarification would be appreciated.

Thank you,
Nathan
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