[PATCH 1/2] drm/amdgpu: Add a filter condition to restrict the SW ras function to be registered only by asics whose hardware supports the ras function

[Chai, Thomas]

-----Original Message-----
From: Zhou1, Tao <Tao.Zhou1 at amd.com> 
Sent: Wednesday, January 12, 2022 4:28 PM
To: Chai, Thomas <YiPeng.Chai at amd.com>; amd-gfx at lists.freedesktop.org
Cc: Zhang, Hawking <Hawking.Zhang at amd.com>; Clements, John <John.Clements at amd.com>
Subject: RE: [PATCH 1/2] drm/amdgpu: Add a filter condition to restrict the SW ras function to be registered only by asics whose hardware supports the ras function

[AMD Official Use Only]



> -----Original Message-----
> From: Chai, Thomas <YiPeng.Chai at amd.com>
> Sent: Wednesday, January 12, 2022 3:48 PM
> To: amd-gfx at lists.freedesktop.org
> Cc: Chai, Thomas <YiPeng.Chai at amd.com>; Zhang, Hawking 
> <Hawking.Zhang at amd.com>; Zhou1, Tao <Tao.Zhou1 at amd.com>; Clements, 
> John <John.Clements at amd.com>; Chai, Thomas <YiPeng.Chai at amd.com>
> Subject: [PATCH 1/2] drm/amdgpu: Add a filter condition to restrict 
> the SW ras function to be registered only by asics whose hardware 
> supports the ras function

>[Tao] The subject is too long, I think "add ras supported check for register_ras_block" is enough.
[Thomas] Ok.

> 
> Add a filter condition to restrict the SW ras function to be 
> registered only by asics whose hardware supports the ras function.
> 
> Signed-off-by: yipechai <YiPeng.Chai at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> index b1bedfd4febc..62be0b4909b3 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> @@ -2754,7 +2754,7 @@ int amdgpu_ras_reset_gpu(struct amdgpu_device
> *adev)  int amdgpu_ras_register_ras_block(struct amdgpu_device *adev,
>  		struct amdgpu_ras_block_object* ras_block_obj)  {
> -	if (!adev || !ras_block_obj)
> +	if (!adev || !amdgpu_ras_asic_supported(adev) || !ras_block_obj)
>  		return -EINVAL;

>[Tao] Can we return 0 if !amdgpu_ras_asic_supported(adev)? It's not an error.
[Thomas] OK.

> 
>  	INIT_LIST_HEAD(&ras_block_obj->node);
> --
> 2.25.1