diff options
Diffstat (limited to 'drivers/dma-buf')
| -rw-r--r-- | drivers/dma-buf/reservation.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/dma-buf/reservation.c b/drivers/dma-buf/reservation.c index 737885e79b74..b759a569b7b8 100644 --- a/drivers/dma-buf/reservation.c +++ b/drivers/dma-buf/reservation.c @@ -104,7 +104,8 @@ reservation_object_add_shared_inplace(struct reservation_object *obj, struct reservation_object_list *fobj, struct dma_fence *fence) { - u32 i; + struct dma_fence *signaled = NULL; + u32 i, signaled_idx; dma_fence_get(fence); @@ -126,17 +127,28 @@ reservation_object_add_shared_inplace(struct reservation_object *obj, dma_fence_put(old_fence); return; } + + if (!signaled && dma_fence_is_signaled(old_fence)) { + signaled = old_fence; + signaled_idx = i; + } } /* * memory barrier is added by write_seqcount_begin, * fobj->shared_count is protected by this lock too */ - RCU_INIT_POINTER(fobj->shared[fobj->shared_count], fence); - fobj->shared_count++; + if (signaled) { + RCU_INIT_POINTER(fobj->shared[signaled_idx], fence); + } else { + RCU_INIT_POINTER(fobj->shared[fobj->shared_count], fence); + fobj->shared_count++; + } write_seqcount_end(&obj->seq); preempt_enable(); + + dma_fence_put(signaled); } static void |