The function silently assumed that signaling was already enabled for the
dma_fence_array. This meant that without enabling signaling first we would
never see forward progress.
Fix that by falling back to testing each individual fence when signaling
isn't enabled yet.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/dma-buf/dma-fence-array.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c
index 46ac42bcfac0..01203796827a 100644
--- a/drivers/dma-buf/dma-fence-array.c
+++ b/drivers/dma-buf/dma-fence-array.c
@@ -103,10 +103,22 @@ static bool dma_fence_array_enable_signaling(struct dma_fence *fence)
static bool dma_fence_array_signaled(struct dma_fence *fence)
{
struct dma_fence_array *array = to_dma_fence_array(fence);
+ unsigned int i, num_pending;
- if (atomic_read(&array->num_pending) > 0)
+ num_pending = atomic_read(&array->num_pending);
+ if (test_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT, &array->base.flags)) {
+ if (!num_pending)
+ goto signal;
return false;
+ }
+
+ for (i = 0; i < array->num_fences; ++i) {
+ if (dma_fence_is_signaled(array->fences[i]) && !--num_pending)
+ goto signal;
+ }
+ return false;
+signal:
dma_fence_array_clear_pending_error(array);
return true;
}
--
2.34.1
