linux/arch/mn10300/mm/cache-disabled.c
David Howells 62bdb288bf MN10300: Handle missing sys_cacheflush() when caching disabled
When caching is disabled on the MN10300 arch, the sys_cacheflush()
function is removed by conditional stuff in the makefiles, but is still
referred to by the syscall table.

Provide a null version that just returns 0 when caching is disabled (or
-EINVAL if the arguments are silly).

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-09-28 18:01:14 -07:00

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C

/* 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;
}