[Intel-gfx] [PATCH 12/19] drm/i915/guc: Replace check for golden context size

[Lucas De Marchi]

In the other places in this function, guc->ads_map is being protected
from access when it's not yet set. However the last check is actually
about guc->ads_golden_ctxt_size been set before.  These checks should
always match as the size is initialized on the first call to
guc_prep_golden_context(), but it's clearer if we have a single return
and check for guc->ads_golden_ctxt_size.

This is just a readability improvement, no change in behavior.

Cc: Matt Roper <matthew.d.roper at intel.com>
Cc: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: John Harrison <John.C.Harrison at Intel.com>
Cc: Matthew Brost <matthew.brost at intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
index dd9ec47eed16..8e4768289792 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
@@ -461,10 +461,10 @@ static int guc_prep_golden_context(struct intel_guc *guc)
 		addr_ggtt += alloc_size;
 	}
 
-	if (dma_buf_map_is_null(&guc->ads_map))
-		return total_size;
+	/* Make sure current size matches what we calculated previously */
+	if (guc->ads_golden_ctxt_size)
+		GEM_BUG_ON(guc->ads_golden_ctxt_size != total_size);
 
-	GEM_BUG_ON(guc->ads_golden_ctxt_size != total_size);
 	return total_size;
 }
 
-- 
2.35.0