From 78ab0a38bfe0e02db6e619185dd4337fc97e3ffe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Fri, 9 Sep 2016 15:39:08 +0200
Subject: [PATCH] drm/amdgpu: unbind GTT only when it is bound
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Doesn't make much sense to clear the GTT when it was never filled.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index b50535c3ce51..8aa3fe6c270c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -733,6 +733,9 @@ static int amdgpu_ttm_backend_unbind(struct ttm_tt *ttm)
{
struct amdgpu_ttm_tt *gtt = (void *)ttm;
+ if (!amdgpu_ttm_is_bound(ttm))
+ return 0;
+
/* unbind shouldn't be done for GDS/GWS/OA in ttm_bo_clean_mm */
if (gtt->adev->gart.ready)
amdgpu_gart_unbind(gtt->adev, gtt->offset, ttm->num_pages);
--
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