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Tip revision: 7daf201d7fe8334e2d2364d4e8ed3394ec9af819 authored by Linus Torvalds on 24 June 2018, 12:54:29 UTC
Linux 4.18-rc2
Tip revision: 7daf201
dma-mapping.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_GENERIC_DMA_MAPPING_H
#define _ASM_GENERIC_DMA_MAPPING_H

static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
	/*
	 * Use the non-coherent ops if available.  If an architecture wants a
	 * more fine-grained selection of operations it will have to implement
	 * get_arch_dma_ops itself or use the per-device dma_ops.
	 */
#ifdef CONFIG_DMA_NONCOHERENT_OPS
	return &dma_noncoherent_ops;
#else
	return &dma_direct_ops;
#endif
}

#endif /* _ASM_GENERIC_DMA_MAPPING_H */
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