sh: wire up clear_user_highpage() for sh4, convert sh7705.

This wires up clear_user_highpage() on SH-4 and subsequently converts the
SH7705 32kB cache mode over to using it. Now that the SH-4 implementation
handles all of the dcache purging directly in the aliasing case, there is
no need to do this in the default clear_page() implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 1 insertions, 6 deletions

diff --git a/arch/sh/mm/pg-nommu.c b/arch/sh/mm/pg-nommu.c
index 91ed4e695ff..7e33b486b7e 100644
--- a/arch/sh/mm/pg-nommu.c
+++ b/arch/sh/mm/pg-nommu.c
@@ -1,7 +1,7 @@
 /*
  * arch/sh/mm/pg-nommu.c
  *
- * clear_page()/copy_page() implementation for MMUless SH.
+ * copy_page()/__copy_user()/__clear_user() implementations for MMUless SH.
  *
  * Copyright (C) 2003  Paul Mundt
  *
@@ -20,11 +20,6 @@ void copy_page(void *to, void *from)
 	memcpy(to, from, PAGE_SIZE);
 }
 
-void clear_page(void *to)
-{
-	memset(to, 0, PAGE_SIZE);
-}
-
 __kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n)
 {
 	memcpy(to, from, n);