diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2007-07-10 12:32:56 -0400 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2007-07-10 12:32:56 -0400 |
commit | 24e9d0b96dac5503c0b6f034d553030c604228a7 (patch) | |
tree | 19924ab3906f524f8b50983612c8cf056dfdaa72 /arch/mips/mm | |
parent | 8bb809df6919f927bcb910bbc852d5724eaa1eb9 (diff) |
[MIPS] Hook for platforms to define cachability of /dev/mem regions
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mm')
-rw-r--r-- | arch/mips/mm/cache.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index abf99b1eba13..81f925a9a731 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c | |||
@@ -6,6 +6,8 @@ | |||
6 | * Copyright (C) 1994 - 2003, 07 by Ralf Baechle (ralf@linux-mips.org) | 6 | * Copyright (C) 1994 - 2003, 07 by Ralf Baechle (ralf@linux-mips.org) |
7 | * Copyright (C) 2007 MIPS Technologies, Inc. | 7 | * Copyright (C) 2007 MIPS Technologies, Inc. |
8 | */ | 8 | */ |
9 | #include <linux/fs.h> | ||
10 | #include <linux/fcntl.h> | ||
9 | #include <linux/init.h> | 11 | #include <linux/init.h> |
10 | #include <linux/kernel.h> | 12 | #include <linux/kernel.h> |
11 | #include <linux/module.h> | 13 | #include <linux/module.h> |
@@ -164,3 +166,11 @@ void __init cpu_cache_init(void) | |||
164 | 166 | ||
165 | panic(cache_panic); | 167 | panic(cache_panic); |
166 | } | 168 | } |
169 | |||
170 | int __weak __uncached_access(struct file *file, unsigned long addr) | ||
171 | { | ||
172 | if (file->f_flags & O_SYNC) | ||
173 | return 1; | ||
174 | |||
175 | return addr >= __pa(high_memory); | ||
176 | } | ||