RE: [PATCH drm/amdgpu/psp: ignore psp reponse status] drm/amdgpu/psp: ignore psp reponse status

["Xu, Feifei" <Feifei.Xu-5C7GfCeVMHo@public.gmane.org>]

Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>

-----Original Message-----
From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> On Behalf Of Huang, Ray
Sent: Monday, January 14, 2019 4:28 PM
To: Liu, Aaron <Aaron.Liu@amd.com>; amd-gfx@lists.freedesktop.org; Yu, Xiangliang <Xiangliang.Yu@amd.com>; Deucher, Alexander <Alexander.Deucher@amd.com>; Zhang, Hawking <Hawking.Zhang@amd.com>
Cc: Liu, Aaron <Aaron.Liu@amd.com>; Koenig, Christian <Christian.Koenig@amd.com>
Subject: RE: [PATCH drm/amdgpu/psp: ignore psp reponse status] drm/amdgpu/psp: ignore psp reponse status

Is some cases, response status is not 0 even there is no problem while the command is submitted.
Some version of PSP FW doesn't write 0 to that field. So here we would like to only print a warning instead of an error during psp initialization to avoid breaking hw_init.  

Reviewed-by: Huang Rui <ray.huang@amd.com>  


> -----Original Message-----
> From: amd-gfx [mailto:amd-gfx-bounces@lists.freedesktop.org] On Behalf 
> Of Aaron Liu
> Sent: Monday, January 14, 2019 4:17 PM
> To: amd-gfx@lists.freedesktop.org
> Cc: Liu, Aaron <Aaron.Liu@amd.com>
> Subject: [PATCH drm/amdgpu/psp: ignore psp reponse status]
> drm/amdgpu/psp: ignore psp reponse status
> 
> Don't return err if psp reponse status isn't zero
> 
> Change-Id: I680679983f972b6969f4949f1faafaf17fe996a6
> Signed-off-by: Aaron Liu <aaron.liu@amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> index 53c2d60..48778b3 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> @@ -140,14 +140,15 @@ psp_cmd_submit_buf(struct psp_context *psp,
>  	while (*((unsigned int *)psp->fence_buf) != index)
>  		msleep(1);
> 
> -	/* the status field must be 0 after psp command completion */
> +	/* the status field should be 0 after psp command completion
> +	 * if not, print WARN msg
> +	 */
>  	if (psp->cmd_buf_mem->resp.status) {
>  		if (ucode)
> -			DRM_ERROR("failed to load ucode id (%d) ",
> +			DRM_WARN("failed to load ucode id (%d) ",
>  				  ucode->ucode_id);
> -		DRM_ERROR("psp command failed and response status is
> (%d)\n",
> +		DRM_WARN("psp command failed and response status is
> (%d)\n",
>  			  psp->cmd_buf_mem->resp.status);
> -		return -EINVAL;
>  	}
> 
>  	/* get xGMI session id from response buffer */
> --
> 2.7.4
> 
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