From: Heechul Yun <heechul@illinois.edu>
Date: Fri, 8 Jul 2011 12:32:34 +0000 (+0100)
Subject: ARM: 6995/2: mm: remove unnecessary cache flush on v6 copypage
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c7e89b16eb90e7bdf0d71bd5ba265ce8d424f30b;p=linux-beck.git

ARM: 6995/2: mm: remove unnecessary cache flush on v6 copypage

Originally introduced to maintain coherency between icache and dcache
in v6 nonaliasing mode. This is now handled by __sync_icache_dcache since
c0177800, therefore unnecessary in this function.

Signed-off-by: Heechul Yun <heechul@illinois.edu>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c
index bdba6c65c901..63cca0097130 100644
--- a/arch/arm/mm/copypage-v6.c
+++ b/arch/arm/mm/copypage-v6.c
@@ -41,7 +41,6 @@ static void v6_copy_user_highpage_nonaliasing(struct page *to,
 	kfrom = kmap_atomic(from, KM_USER0);
 	kto = kmap_atomic(to, KM_USER1);
 	copy_page(kto, kfrom);
-	__cpuc_flush_dcache_area(kto, PAGE_SIZE);
 	kunmap_atomic(kto, KM_USER1);
 	kunmap_atomic(kfrom, KM_USER0);
 }