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dma-mapping: provide a generic asm/dma-mapping.h

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For architectures that just use the generic dma_noop_ops we can provide
a generic version of dma-mapping.h.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig
2017-12-23 10:56:51 +01:00
parent cea9d03c82
commit c5cd037d1c
8 changed files with 14 additions and 64 deletions
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30
arch/riscv/include/asm/dma-mapping.h
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@@ -1,30 +0,0 @@
/*
* Copyright (C) 2003-2004 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
* Copyright (C) 2012 ARM Ltd.
* Copyright (C) 2016 SiFive, Inc.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ASM_RISCV_DMA_MAPPING_H
#define __ASM_RISCV_DMA_MAPPING_H
/* Use ops->dma_mapping_error (if it exists) or assume success */
// #undef DMA_ERROR_CODE
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
return &dma_noop_ops;
}
#endif /* __ASM_RISCV_DMA_MAPPING_H */