From: Monk Liu <Monk.Liu@amd.com>
Date: Tue, 14 Nov 2017 16:48:06 +0800
Subject: drm/amdgpu:fix memleak in takedown
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Git-commit: 9ee8ecbb3eafeb1a899eaba1329ba3c4c092b754
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

this can fix the memory leak under the case that not all
BO are freed during "takedown" stage, because originally
it blocks following kfree on mgr.

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c  |    6 ------
 drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c |    5 -----
 2 files changed, 11 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c
@@ -71,12 +71,6 @@ static int amdgpu_gtt_mgr_fini(struct tt
 {
 	struct amdgpu_gtt_mgr *mgr = man->priv;
 
-	spin_lock(&mgr->lock);
-	if (!drm_mm_clean(&mgr->mm)) {
-		spin_unlock(&mgr->lock);
-		return -EBUSY;
-	}
-
 	drm_mm_takedown(&mgr->mm);
 	spin_unlock(&mgr->lock);
 	kfree(mgr);
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -68,11 +68,6 @@ static int amdgpu_vram_mgr_fini(struct t
 	struct amdgpu_vram_mgr *mgr = man->priv;
 
 	spin_lock(&mgr->lock);
-	if (!drm_mm_clean(&mgr->mm)) {
-		spin_unlock(&mgr->lock);
-		return -EBUSY;
-	}
-
 	drm_mm_takedown(&mgr->mm);
 	spin_unlock(&mgr->lock);
 	kfree(mgr);