diff options
Diffstat (limited to 'arch/csky/mm/ioremap.c')
-rw-r--r-- | arch/csky/mm/ioremap.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/csky/mm/ioremap.c b/arch/csky/mm/ioremap.c new file mode 100644 index 0000000000..70c8268d3b --- /dev/null +++ b/arch/csky/mm/ioremap.c @@ -0,0 +1,19 @@ +// 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); |