Re: [PATCH] drm/amdgpu: use adev_to_drm to get drm_device

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On 2021-06-09 10:01 a.m., Felix Kuehling wrote:
> Am 2021-06-09 um 5:23 a.m. schrieb Guchun Chen:
>> Fixes:
>> 9faf262c32d3 drm/amdgpu: Add DMA mapping of GTT BOs
>> 090f3a60d7e8 drm/amdgpu: Use delayed work to collect RAS error counters
> A Fixes tag implies that something was broken. However, the
> implementation of adev_to_drm does the exact same thing. I don't see the
> point of this patch. It doesn't fix any problem, and IMHO doesn't make
> the code more readable.

We added this due to some changes in DRM:

8aba21b75136c3 drm/amdgpu: Embed drm_device into amdgpu_device (v3)
4a580877bdcb83 drm/amdgpu: Get DRM dev from adev by inline-f

It's good to use this inline function, to accommodate more flexible DRM.

Regards,
Luben

>
> Regards,
>   Felix
>
>
>> Signed-off-by: Guchun Chen <guchun.chen@xxxxxxx>
>> ---
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 2 +-
>>  drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c          | 2 +-
>>  2 files changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
>> index 016815b7a773..fb6bcc386de1 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
>> @@ -639,7 +639,7 @@ kfd_mem_attach_dmabuf(struct amdgpu_device *adev, struct kgd_mem *mem,
>>  		}
>>  	}
>>  
>> -	gobj = amdgpu_gem_prime_import(&adev->ddev, mem->dmabuf);
>> +	gobj = amdgpu_gem_prime_import(adev_to_drm(adev), mem->dmabuf);
>>  	if (IS_ERR(gobj))
>>  		return PTR_ERR(gobj);
>>  
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
>> index ec936cde2726..bfbcb9ff2453 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
>> @@ -2122,7 +2122,7 @@ static void amdgpu_ras_counte_dw(struct work_struct *work)
>>  	struct amdgpu_ras *con = container_of(work, struct amdgpu_ras,
>>  					      ras_counte_delay_work.work);
>>  	struct amdgpu_device *adev = con->adev;
>> -	struct drm_device *dev = &adev->ddev;
>> +	struct drm_device *dev = adev_to_drm(adev->ddev);
>>  	unsigned long ce_count, ue_count;
>>  	int res;
>>  

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