linux-kernel - [PATCH 3.5 19/62] ARM: 7957/1: add DSB after icache flush in __flush_icache

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Message-Id: <1394030226-26652-20-git-send-email-luis.henriques@canonical.com>
Date:	Wed,  5 Mar 2014 14:36:23 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Vinayak Kale <vkale@....com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.5 19/62] ARM: 7957/1: add DSB after icache flush in __flush_icache_all()

3.5.7.32 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vinayak Kale <vkale@....com>

commit 39544ac9df20f73e49fc6b9ac19ff533388c82c0 upstream.

Add DSB after icache flush to complete the cache maintenance operation.

Signed-off-by: Vinayak Kale <vkale@....com>
Acked-by: Catalin Marinas <catalin.marinas@....com>
Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 arch/arm/include/asm/cacheflush.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 76d7f24..5ff9726 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -202,6 +202,7 @@ extern void copy_to_user_page(struct vm_area_struct *, struct page *,
 static inline void __flush_icache_all(void)
 {
 	__flush_icache_preferred();
+	dsb();
 }
 
 #define flush_cache_all()		__cpuc_flush_kern_all()
-- 
1.9.0

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