blob: 70c8268d3b2bdda6dac53cbcbf66d731ff51716f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
// 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);
|
