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From a961ea7349d08d5962b6a619f2c2cca670da41ed Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Mon, 4 May 2015 13:20:36 +0200
Subject: [PATCH 0190/1050] drm/amdgpu: fix userptr lockup
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
index b3a17a9..b1969f2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c
@@ -142,6 +142,9 @@ static void amdgpu_mn_invalidate_range_start(struct mmu_notifier *mn,
list_for_each_entry(bo, &node->bos, mn_list) {
+ if (!bo->tbo.ttm || bo->tbo.ttm->state != tt_bound)
+ continue;
+
r = amdgpu_bo_reserve(bo, true);
if (r) {
DRM_ERROR("(%ld) failed to reserve user bo\n", r);
--
1.9.1
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