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-rw-r--r--arch/mn10300/mm/Makefile14
-rw-r--r--arch/mn10300/mm/cache-disabled.c21
2 files changed, 27 insertions, 8 deletions
diff --git a/arch/mn10300/mm/Makefile b/arch/mn10300/mm/Makefile
index 28b9d983db0c..1557277fbc5c 100644
--- a/arch/mn10300/mm/Makefile
+++ b/arch/mn10300/mm/Makefile
@@ -2,13 +2,11 @@
2# Makefile for the MN10300-specific memory management code 2# Makefile for the MN10300-specific memory management code
3# 3#
4 4
5cacheflush-y := cache.o cache-mn10300.o
6cacheflush-$(CONFIG_MN10300_CACHE_WBACK) += cache-flush-mn10300.o
7
8cacheflush-$(CONFIG_MN10300_CACHE_DISABLED) := cache-disabled.o
9
5obj-y := \ 10obj-y := \
6 init.o fault.o pgtable.o extable.o tlb-mn10300.o mmu-context.o \ 11 init.o fault.o pgtable.o extable.o tlb-mn10300.o mmu-context.o \
7 misalignment.o dma-alloc.o 12 misalignment.o dma-alloc.o $(cacheflush-y)
8
9ifneq ($(CONFIG_MN10300_CACHE_DISABLED),y)
10obj-y += cache.o cache-mn10300.o
11ifeq ($(CONFIG_MN10300_CACHE_WBACK),y)
12obj-y += cache-flush-mn10300.o
13endif
14endif
diff --git a/arch/mn10300/mm/cache-disabled.c b/arch/mn10300/mm/cache-disabled.c
new file mode 100644
index 000000000000..f669ea42aba6
--- /dev/null
+++ b/arch/mn10300/mm/cache-disabled.c
@@ -0,0 +1,21 @@
1/* Handle the cache being disabled
2 *
3 * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11#include <linux/mm.h>
12
13/*
14 * allow userspace to flush the instruction cache
15 */
16asmlinkage long sys_cacheflush(unsigned long start, unsigned long end)
17{
18 if (end < start)
19 return -EINVAL;
20 return 0;
21}