linux-kernel - [PATCH 3.2 124/200] ARM: 7957/1: add DSB after icache flush in __flush_icache

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Message-ID: <lsq.1396221815.986599224@decadent.org.uk>
Date:	Mon, 31 Mar 2014 00:23:35 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Catalin Marinas" <catalin.marinas@....com>,
	"Russell King" <rmk+kernel@....linux.org.uk>,
	"Vinayak Kale" <vkale@....com>
Subject: [PATCH 3.2 124/200] ARM: 7957/1: add DSB after icache flush in
 __flush_icache_all()

3.2.56-rc1 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: Ben Hutchings <ben@...adent.org.uk>
---
 arch/arm/include/asm/cacheflush.h | 1 +
 1 file changed, 1 insertion(+)

--- 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_
 static inline void __flush_icache_all(void)
 {
 	__flush_icache_preferred();
+	dsb();
 }
 
 #define flush_cache_all()		__cpuc_flush_kern_all()

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