linux-stable/arch/csky/mm/ioremap.c
Christoph Hellwig 0055f67b59 csky: use generic ioremap
Use the generic ioremap_prot and iounmap helpers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Guo Ren <guoren@kernel.org>
2019-11-12 11:37:52 +01:00

19 lines
485 B
C

// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#include <linux/export.h>
#include <linux/mm.h>
#include <linux/io.h>
pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
unsigned long size, pgprot_t vma_prot)
{
if (!pfn_valid(pfn)) {
return pgprot_noncached(vma_prot);
} else if (file->f_flags & O_SYNC) {
return pgprot_writecombine(vma_prot);
}
return vma_prot;
}
EXPORT_SYMBOL(phys_mem_access_prot);