Re: [PATCH v2] drm/amd: Simplify the bo size check funciton

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Am 28.08.23 um 12:02 schrieb Ma Jun:
Simplify the code logic of size check function amdgpu_bo_validate_size

Signed-off-by: Ma Jun <Jun.Ma2@xxxxxxx>

Reviewed-by: Christian König <christian.koenig@xxxxxxx>

---
  drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 29 +++++++++-------------
  1 file changed, 12 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 807ea74ece25..e603ca062fcc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -480,7 +480,7 @@ void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
  		*cpu_addr = NULL;
  }
-/* Validate bo size is bit bigger then the request domain */
+/* Validate bo size is bit bigger than the request domain */
  static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
  					  unsigned long size, u32 domain)
  {
@@ -490,29 +490,24 @@ static bool amdgpu_bo_validate_size(struct amdgpu_device *adev,
  	 * If GTT is part of requested domains the check must succeed to
  	 * allow fall back to GTT.
  	 */
-	if (domain & AMDGPU_GEM_DOMAIN_GTT) {
+	if (domain & AMDGPU_GEM_DOMAIN_GTT)
  		man = ttm_manager_type(&adev->mman.bdev, TTM_PL_TT);
-
-		if (man && size < man->size)
-			return true;
-		else if (!man)
-			WARN_ON_ONCE("GTT domain requested but GTT mem manager uninitialized");
-		goto fail;
-	} else if (domain & AMDGPU_GEM_DOMAIN_VRAM) {
+	else if (domain & AMDGPU_GEM_DOMAIN_VRAM)
  		man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
+	else
+		return true;
- if (man && size < man->size)
-			return true;
-		goto fail;
+	if (!man) {
+		if (domain & AMDGPU_GEM_DOMAIN_GTT)
+			WARN_ON_ONCE("GTT domain requested but GTT mem manager uninitialized");
+		return false;
  	}
/* TODO add more domains checks, such as AMDGPU_GEM_DOMAIN_CPU, _DOMAIN_DOORBELL */
-	return true;
+	if (size < man->size)
+		return true;
-fail:
-	if (man)
-		DRM_DEBUG("BO size %lu > total memory in domain: %llu\n", size,
-			  man->size);
+	DRM_DEBUG("BO size %lu > total memory in domain: %llu\n", size, man->size);
  	return false;
  }




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