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 bdba6c65c901a1c682f1aaf0fce3875ad8fa448b..63cca0097130c9250c1838a8358b27354a9ea8e0 100644 (file)
--- 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);
 }