LXR linux/arch/csky/mm/ioremap.c

   1// SPDX-License-Identifier: GPL-2.0
   2// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
   3
   4#include <linux/export.h>
   5#include <linux/mm.h>
   6#include <linux/io.h>
   7
   8pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
   9                              unsigned long size, pgprot_t vma_prot)
  10{
  11        if (!pfn_valid(pfn)) {
  12                return pgprot_noncached(vma_prot);
  13        } else if (file->f_flags & O_SYNC) {
  14                return pgprot_writecombine(vma_prot);
  15        }
  16
  17        return vma_prot;
  18}
  19EXPORT_SYMBOL(phys_mem_access_prot);
  20