From 24e9d0b96dac5503c0b6f034d553030c604228a7 Mon Sep 17 00:00:00 2001
From: Ralf Baechle <ralf@linux-mips.org>
Date: Tue, 10 Jul 2007 17:32:56 +0100
Subject: [MIPS] Hook for platforms to define cachability of /dev/mem regions

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/mm/cache.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'arch/mips')

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 @@
  * Copyright (C) 1994 - 2003, 07 by Ralf Baechle (ralf@linux-mips.org)
  * Copyright (C) 2007 MIPS Technologies, Inc.
  */
+#include <linux/fs.h>
+#include <linux/fcntl.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -164,3 +166,11 @@ void __init cpu_cache_init(void)
 
 	panic(cache_panic);
 }
+
+int __weak __uncached_access(struct file *file, unsigned long addr)
+{
+	if (file->f_flags & O_SYNC)
+		return 1;
+
+	return addr >= __pa(high_memory);
+}
-- 
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