Re: [PATCH] drm/i915/guc: drop guc_communication_enabled

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On Mon, Aug 23, 2021 at 09:31:37AM -0700, Daniele Ceraolo Spurio wrote:
> The function is only used from within GEM_BUG_ON(), which is causing
> warnings with Wunneeded-internal-declaration in some builds. Since the
> function is a simple wrapper around a CT function, we can just call the
> CT function directly instead.
> 
> Fixes: 1fb12c587152 ("drm/i915/guc: skip disabling CTBs before sanitizing the GuC")
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>

Reviewed-by: Matthew Brost <matthew.brost@xxxxxxxxx>

> Cc: Matthew Brost <matthew.brost@xxxxxxxxx>
> Cc: John Harrison <John.C.Harrison@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/gt/uc/intel_uc.c | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
> index b104fb7607eb..86c318516e14 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
> @@ -172,11 +172,6 @@ void intel_uc_driver_remove(struct intel_uc *uc)
>  	__uc_free_load_err_log(uc);
>  }
>  
> -static inline bool guc_communication_enabled(struct intel_guc *guc)
> -{
> -	return intel_guc_ct_enabled(&guc->ct);
> -}
> -
>  /*
>   * Events triggered while CT buffers are disabled are logged in the SCRATCH_15
>   * register using the same bits used in the CT message payload. Since our
> @@ -210,7 +205,7 @@ static void guc_get_mmio_msg(struct intel_guc *guc)
>  static void guc_handle_mmio_msg(struct intel_guc *guc)
>  {
>  	/* we need communication to be enabled to reply to GuC */
> -	GEM_BUG_ON(!guc_communication_enabled(guc));
> +	GEM_BUG_ON(!intel_guc_ct_enabled(&guc->ct));
>  
>  	spin_lock_irq(&guc->irq_lock);
>  	if (guc->mmio_msg) {
> @@ -226,7 +221,7 @@ static int guc_enable_communication(struct intel_guc *guc)
>  	struct drm_i915_private *i915 = gt->i915;
>  	int ret;
>  
> -	GEM_BUG_ON(guc_communication_enabled(guc));
> +	GEM_BUG_ON(intel_guc_ct_enabled(&guc->ct));
>  
>  	ret = i915_inject_probe_error(i915, -ENXIO);
>  	if (ret)
> @@ -662,7 +657,7 @@ static int __uc_resume(struct intel_uc *uc, bool enable_communication)
>  		return 0;
>  
>  	/* Make sure we enable communication if and only if it's disabled */
> -	GEM_BUG_ON(enable_communication == guc_communication_enabled(guc));
> +	GEM_BUG_ON(enable_communication == intel_guc_ct_enabled(&guc->ct));
>  
>  	if (enable_communication)
>  		guc_enable_communication(guc);
> -- 
> 2.33.0
> 



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