MN10300: Handle missing sys_cacheflush() when caching disabled

# Makefile for the MN10300-specific memory management code

#

cacheflush-y	:= cache.o cache-mn10300.o

cacheflush-$(CONFIG_MN10300_CACHE_WBACK) += cache-flush-mn10300.o

cacheflush-$(CONFIG_MN10300_CACHE_DISABLED) := cache-disabled.o

obj-y := \

	init.o fault.o pgtable.o extable.o tlb-mn10300.o mmu-context.o \

	misalignment.o dma-alloc.o

ifneq ($(CONFIG_MN10300_CACHE_DISABLED),y)

obj-y	+= cache.o cache-mn10300.o

ifeq ($(CONFIG_MN10300_CACHE_WBACK),y)

obj-y	+= cache-flush-mn10300.o

endif

endif

	misalignment.o dma-alloc.o $(cacheflush-y)

/* Handle the cache being disabled

 *

 * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.

 * Written by David Howells (dhowells@redhat.com)

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public Licence

 * as published by the Free Software Foundation; either version

 * 2 of the Licence, or (at your option) any later version.

 */

#include <linux/mm.h>

/*

 * allow userspace to flush the instruction cache

 */

asmlinkage long sys_cacheflush(unsigned long start, unsigned long end)

{

	if (end < start)

		return -EINVAL;

	return 0;

}