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x86: remove cruft from <asm/dma-mapping.h>

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<asm/dma-mapping.h> gets pulled in by all drivers using the DMA API.
Remove x86 internal variables and unnecessary includes from it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
This commit is contained in:
Christoph Hellwig 2022-02-17 15:10:54 +01:00
parent 6424e31b1c
commit 3cb4503a33
2 changed files with 2 additions and 11 deletions
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11
arch/x86/include/asm/dma-mapping.h
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@ -2,17 +2,6 @@
#ifndef _ASM_X86_DMA_MAPPING_H
#define _ASM_X86_DMA_MAPPING_H
/*
* IOMMU interface. See Documentation/core-api/dma-api-howto.rst and
* Documentation/core-api/dma-api.rst for documentation.
*/
#include <linux/scatterlist.h>
#include <asm/io.h>
extern int iommu_merge;
extern int panic_on_overflow;
extern const struct dma_map_ops *dma_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)

2
arch/x86/include/asm/iommu.h
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@ -8,6 +8,8 @@
extern int force_iommu, no_iommu;
extern int iommu_detected;
extern int iommu_merge;
extern int panic_on_overflow;
#ifdef CONFIG_SWIOTLB
extern bool x86_swiotlb_enable;