Re: [PATCH] drm/amdgpu: use first uvd instance to avoid clang build error

[Alex Deucher]

On Sun, Jun 17, 2018 at 10:03 PM, James Zhu <jamesz@xxxxxxx> wrote:
>
>
> On 2018-06-17 04:52 AM, Stefan Agner wrote:
>>
>> Explicitly use the first uvd instance to avoid a build error when
>> using clang 6:
>> drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c:1148:52: error: expected ')'
>>                  container_of(work, struct amdgpu_device,
>> uvd.inst->idle_work.work);
>>                                                                   ^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c:1148:3: note: to match this '('
>>                  container_of(work, struct amdgpu_device,
>> uvd.inst->idle_work.work);
>>                  ^
>> ./include/linux/kernel.h:967:21: note: expanded from macro 'container_of'
>>          ((type *)(__mptr - offsetof(type, member))); })
>>                             ^
>> ./include/linux/stddef.h:17:32: note: expanded from macro 'offsetof'
>>                                  ^
>> ./include/linux/compiler-gcc.h:170:20: note: expanded from macro
>>        '__compiler_offsetof'
>>          __builtin_offsetof(a, b)
>>                            ^
>> drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c:1147:24: error: initializing
>>        'struct amdgpu_device *' with an expression of incompatible type
>> 'void'
>>          struct amdgpu_device *adev =
>>                                ^
>> 2 errors generated.
>>
>> Fixes: 10dd74eac4db ("drm/amdgpu/vg20:Restruct uvd.inst to support
>> multiple instances")
>> Cc: James Zhu <James.Zhu@xxxxxxx>
>> Signed-off-by: Stefan Agner <stefan@xxxxxxxx>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
>> index bcf68f80bbf0..6666a5888c44 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c
>> @@ -1145,7 +1145,7 @@ int amdgpu_uvd_get_destroy_msg(struct amdgpu_ring
>> *ring, uint32_t handle,
>>   static void amdgpu_uvd_idle_work_handler(struct work_struct *work)
>>   {
>>         struct amdgpu_device *adev =
>> -               container_of(work, struct amdgpu_device,
>> uvd.inst->idle_work.work);
>> +               container_of(work, struct amdgpu_device,
>> uvd.inst[0].idle_work.work);
>
> Hi Alex,
> If all instances share one idle work from hardware view currently and in the
> future ,
> should we move struct delayed_work idle_work from struct amdgpu_uvd_inst to
> struct amdgpu_uvd?

Yes, please do.

Alex

> James
>>
>>         unsigned fences = 0, i, j;
>>         for (i = 0; i < adev->uvd.num_uvd_inst; ++i) {
>
>
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