Just make sure that we forward the user fence status to the output
whenever any of the inputs are an user fence.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/dma-buf/dma-fence-unwrap.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/dma-buf/dma-fence-unwrap.c b/drivers/dma-buf/dma-fence-unwrap.c
index 87ee2efced10..dd3c43aba8f1 100644
--- a/drivers/dma-buf/dma-fence-unwrap.c
+++ b/drivers/dma-buf/dma-fence-unwrap.c
@@ -66,17 +66,19 @@ struct dma_fence *__dma_fence_merge(unsigned int num_fences,
{
struct dma_fence_array *result;
struct dma_fence *tmp, **array;
+ bool user_fence = false;
unsigned int i, count;
count = 0;
for (i = 0; i < num_fences; ++i) {
+ user_fence |= test_bit(DMA_FENCE_FLAG_USER, &fences[i]->flags);
dma_fence_unwrap_for_each(tmp, &iter[i], fences[i])
if (!dma_fence_is_signaled(tmp))
++count;
}
if (count == 0)
- return dma_fence_get_stub(false);
+ return dma_fence_get_stub(user_fence);
if (count > INT_MAX)
return NULL;
@@ -129,11 +131,12 @@ struct dma_fence *__dma_fence_merge(unsigned int num_fences,
} while (tmp);
if (count == 0) {
- tmp = dma_fence_get_stub(false);
+ tmp = dma_fence_get_stub(user_fence);
goto return_tmp;
}
- if (count == 1) {
+ if (count == 1 &&
+ test_bit(DMA_FENCE_FLAG_USER, &array[0]->flags) == user_fence) {
tmp = array[0];
goto return_tmp;
}
@@ -145,6 +148,8 @@ struct dma_fence *__dma_fence_merge(unsigned int num_fences,
tmp = NULL;
goto return_tmp;
}
+ if (user_fence)
+ set_bit(DMA_FENCE_FLAG_USER, &result->base.flags);
return &result->base;
return_tmp:
--
2.25.1
