ARM: 7957/1: add DSB after icache flush in __flush_icache_all()

Vinayak Kale · Russell King · commit 39544ac9df20 · 2014-02-17T23:09:00.000Z
Add DSB after icache flush to complete the cache maintenance operation.

Signed-off-by: Vinayak Kale &lt;vkale@apm.com&gt;
Acked-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
Cc: &lt;stable@vger.kernel.org&gt;
Signed-off-by: Russell King &lt;rmk+kernel@arm.linux.org.uk&gt;
diff --git 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();
 }
 
 /*

Original file line number	Diff line number	Diff line change
`@@ -212,6 +212,7 @@ extern void copy_to_user_page(struct vm_area_struct , struct page ,`
`212`	`212`	`static inline void __flush_icache_all(void)`
`213`	`213`	`{`
`214`	`214`	`__flush_icache_preferred();`
	`215`	`+ dsb();`
`215`	`216`	`}`
`216`	`217`
`217`	`218`	`/*`