linux-kernel - [PATCH RESEND] arm: add DSB after icache flush in __flush_icache

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Message-Id: <1392186601-25625-1-git-send-email-vkale@apm.com>
Date:	Wed, 12 Feb 2014 12:00:01 +0530
From:	Vinayak Kale <vkale@....com>
To:	patches@....linux.org.uk, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc:	stable@...r.kernel.org, linux@....linux.org.uk, nico@...aro.org,
	catalin.marinas@....com, Dave.Martin@....com, will.deacon@....com,
	dirk.behme@...il.com, Vinayak Kale <vkale@....com>
Subject: [PATCH RESEND] arm: add DSB after icache flush in __flush_icache_all()

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>
Cc: <stable@...r.kernel.org>
---
KernelVersion: 3.14-rc1

PS:
- This patch is tested for ARM-v7.

 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 ee753f1..ab91ebb 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -212,6 +212,7 @@ extern void copy_to_user_page(struct vm_area_struct *, struct page *,
 static inline void __flush_icache_all(void)
 {
 	__flush_icache_preferred();
+	dsb();
 }
 
 /*
-- 
1.7.9.5

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