diff --git a/arch/loongarch/include/asm/dma-direct.h b/arch/loongarch/include/asm/dma-direct.h
deleted file mode 100644
index 75ccd808a2af..000000000000
--- a/arch/loongarch/include/asm/dma-direct.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
- */
-#ifndef _LOONGARCH_DMA_DIRECT_H
-#define _LOONGARCH_DMA_DIRECT_H
-
-dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr);
-phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr);
-
-#endif /* _LOONGARCH_DMA_DIRECT_H */