mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 20:22:09 +00:00
0055f67b59
Use the generic ioremap_prot and iounmap helpers. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Guo Ren <guoren@kernel.org>
20 lines
485 B
C
20 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);
|