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From 5fd1009b6b0a57a3b40f0d4e45f0849be9016772 Mon Sep 17 00:00:00 2001
From: Rahul Kumar <rahul.kumar1@amd.com>
Date: Thu, 12 Dec 2019 17:14:08 +0530
Subject: [PATCH 4334/4736] drm/ttm: bug fix for sproadic hard hang during
closing(cttl+c) video playback
Added reservation object as shared resource before adding reservation
object to fence.
Signed-off-by: Rahul Kumar <rahul.kumar1@amd.com>
---
drivers/gpu/drm/ttm/ttm_execbuf_util.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/ttm/ttm_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
index e73ae0d22897..41a8dcaa1163 100644
--- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c
+++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
@@ -202,7 +202,13 @@ void ttm_eu_fence_buffer_objects(struct ww_acquire_ctx *ticket,
list_for_each_entry(entry, list, head) {
bo = entry->bo;
if (entry->shared)
+ {
+ int r;
+ r = reservation_object_reserve_shared(bo->resv);
+ if (r)
+ return;
reservation_object_add_shared_fence(bo->resv, fence);
+ }
else
reservation_object_add_excl_fence(bo->resv, fence);
ttm_bo_add_to_lru(bo);
--
2.17.1
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