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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>
wifi-calibration
Paul Mundt 2009-09-09 17:13:07 +09:00
parent deaef20e97
commit c4845a4b22
1 changed files with 1 additions and 1 deletions
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arch/sh/mm/cache-sh4.c
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@ -357,7 +357,7 @@ static void __flush_cache_4096(unsigned long addr, unsigned long phys,
* pointless nead-of-loop check for 0 iterations.
*/
do {
ea = base_addr + PAGE_SIZE;
ea = base_addr + 4096;
a = base_addr;
p = phys;