From: Catalin Marinas <catalin.marinas@arm.com>
Date: Mon, 5 Feb 2007 13:47:46 +0000 (+0100)
Subject: [ARM] 4127/1: Flush the prefetch buffer after changing the DACR
X-Git-Tag: v2.6.21-rc1~75^2~6^6~12
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=620879c9e33262426db0ade650be5d7a2046377b;p=linux-2.6

[ARM] 4127/1: Flush the prefetch buffer after changing the DACR

The ARM Architecture Reference Manual specifies that a prefetch flush
is needed after changing the DACR register (chapter B2.7.6).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/include/asm-arm/domain.h b/include/asm-arm/domain.h
index 4c2885abbe..3c12a76253 100644
--- a/include/asm-arm/domain.h
+++ b/include/asm-arm/domain.h
@@ -57,6 +57,7 @@
 	__asm__ __volatile__(				\
 	"mcr	p15, 0, %0, c3, c0	@ set domain"	\
 	  : : "r" (x));					\
+	isb();						\
 	} while (0)
 
 #define modify_domain(dom,type)					\