sh: Fix up redundant cache flushing for PAGE_SIZE > 4k.
If PAGE_SIZE is presently over 4k we do a lot of extra flushing given
that we purge the cache 4k at a time. Make it explicitly 4k per
iteration, rather than iterating for PAGE_SIZE before looping over again.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c
index e3fbd99..8362d31 100644
--- a/arch/sh/mm/cache-sh4.c
+++ b/arch/sh/mm/cache-sh4.c
@@ -357,7 +357,7 @@
* pointless nead-of-loop check for 0 iterations.
*/
do {
- ea = base_addr + PAGE_SIZE;
+ ea = base_addr + 4096;
a = base_addr;
p = phys;