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authorChristoph Hellwig <hch@lst.de>2018-08-25 08:46:34 +0200
committerChristoph Hellwig <hch@lst.de>2018-09-30 16:07:35 -0700
commitb733116feab5471c0489ab33e90fceb553215e5b (patch)
tree09f9fcb4b6e694c601208c24bff94867804d91c8 /arch/unicore32/include
parent1a0afc14b5da329765d6ecd4a79f546b9363ad8c (diff)
downloadtalos-op-linux-b733116feab5471c0489ab33e90fceb553215e5b.tar.gz
talos-op-linux-b733116feab5471c0489ab33e90fceb553215e5b.zip
unicore32: remove swiotlb support
unicore32 is a bog standard 32-bit port without larger physical address space, highmem or any other obvious addressing limitation. There should be no need to bounce buffer using swiotlb. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Guan Xuetao <gxt@pku.edu.cn>
Diffstat (limited to 'arch/unicore32/include')
-rw-r--r--arch/unicore32/include/asm/Kbuild1
-rw-r--r--arch/unicore32/include/asm/dma-mapping.h22
2 files changed, 1 insertions, 22 deletions
diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild
index bfc7abe77905..1372553dc0a9 100644
--- a/arch/unicore32/include/asm/Kbuild
+++ b/arch/unicore32/include/asm/Kbuild
@@ -4,6 +4,7 @@ generic-y += compat.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h
+generic-y += dma-mapping.h
generic-y += emergency-restart.h
generic-y += exec.h
generic-y += extable.h
diff --git a/arch/unicore32/include/asm/dma-mapping.h b/arch/unicore32/include/asm/dma-mapping.h
deleted file mode 100644
index 790bc2ef4af2..000000000000
--- a/arch/unicore32/include/asm/dma-mapping.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * linux/arch/unicore32/include/asm/dma-mapping.h
- *
- * Code specific to PKUnity SoC and UniCore ISA
- *
- * Copyright (C) 2001-2010 GUAN Xue-tao
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef __UNICORE_DMA_MAPPING_H__
-#define __UNICORE_DMA_MAPPING_H__
-
-#include <linux/swiotlb.h>
-
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
-{
- return &swiotlb_dma_ops;
-}
-
-#endif
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