[Intel-gfx] [PATCH v2 1/2] drm/i915/guc: Use correct error code for GuC initialization failure

[Daniele Ceraolo Spurio]

<snip>

> diff --git a/drivers/gpu/drm/i915/intel_uc_fw.h b/drivers/gpu/drm/i915/intel_uc_fw.h
> index d5fd460..0e3b237 100644
> --- a/drivers/gpu/drm/i915/intel_uc_fw.h
> +++ b/drivers/gpu/drm/i915/intel_uc_fw.h
> @@ -115,6 +115,11 @@ static inline bool intel_uc_fw_is_selected(struct intel_uc_fw *uc_fw)
>   	return uc_fw->path != NULL;
>   }
>   
> +static inline bool intel_uc_fw_is_loaded(struct intel_uc_fw *uc_fw)
> +{
> +	return uc_fw->load_status == INTEL_UC_FIRMWARE_SUCCESS;

Since we do not immediately update uc_fw->load_status after full GPU 
reset we have a small window of time during re-initialization where this 
function would falsely return true. We don't hit the issue in this 
patch, but I'd personally prefer not to add this function until 
uc_fw->load_status is correctly updated as we might inadvertently start 
to use it at the wrong time. Alternatively, if you want to merge this 
soon we could read the status from the HW as an initial version and then 
switch to uc_fw->load_status after we've fixed it.

Daniele

> +}
> +
>   void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
>   		       struct intel_uc_fw *uc_fw);
>   int intel_uc_fw_upload(struct intel_uc_fw *uc_fw,
>