[Intel-gfx] [PATCH v3 11/16] drm/i915/guc: Replace check for golden context size

Lucas De Marchi
2022-02-16T17:41:28Z

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@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@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 0077a63832ad..b739781bd133 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c
@@ -500,10 +500,10 @@ static int guc_prep_golden_context(struct intel_guc *guc)
addr_ggtt += alloc_size;
}

- if (iosys_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;
}

--
2.35.1