[MIPS] Hook for platforms to define cachability of /dev/mem regions

[karo-tx-linux.git] / arch / mips / mm / cache.c

diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 4e8f1b683376da43cf87d2dcf23e1ddf6459240c..81f925a9a731bbb20980ce13793f163932224ea1 100644 (file)
--- 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>
@@ -96,7 +98,7 @@ void __flush_anon_page(struct page *page, unsigned long vmaddr)
 
                kaddr = kmap_coherent(page, vmaddr);
                flush_data_cache_page((unsigned long)kaddr);
-               kunmap_coherent(kaddr);
+               kunmap_coherent();
        }
 }
 
@@ -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);
+}