diff --git a/drivers/dma-buf/dma-heap.c b/drivers/dma-buf/dma-heap.c
index bbbfa28b2f6c0b651dd2047a6a5da7447068fe5a..e5f22b5f04dc21cdadf6765fd2da5e470d020658 100644
--- a/drivers/dma-buf/dma-heap.c
+++ b/drivers/dma-buf/dma-heap.c
@@ -93,6 +93,7 @@ static long dma_heap_ioctl_allocate(struct file *file, void *data)
 	if (heap_allocation->fd_flags & ~DMA_HEAP_VALID_FD_FLAGS)
 		return -EINVAL;
 
+	// 测试这一行是否可以删除
 	if (heap_allocation->heap_flags & ~DMA_HEAP_VALID_HEAP_FLAGS)
 		return -EINVAL;