From: Chao Xie Linux <xiechao.mail@gmail.com>
Date: Wed, 2 Apr 2014 01:50:03 +0000 (+0100)
Subject: ARM: 8016/1: Check cpu id in pj4_cp0_init.
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a5d4506d070adb785459bf142ef707d7c5fe3b84;p=deliverable%2Flinux.git

ARM: 8016/1: Check cpu id in pj4_cp0_init.

Check cpu id in pj4_cp0_init. So for no-PJ4 V7 cpus,
pj4_cpu0_init just return.
This fix will help to make the all the V7 cpus(PJ4 and no-PJ4)
can use code.

Signed-off-by: Chao Xie <chao.xie@marvell.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/kernel/pj4-cp0.c b/arch/arm/kernel/pj4-cp0.c
index 679cf4d18c08..fc7208636284 100644
--- a/arch/arm/kernel/pj4-cp0.c
+++ b/arch/arm/kernel/pj4-cp0.c
@@ -17,6 +17,7 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <asm/thread_notify.h>
+#include <asm/cputype.h>
 
 static int iwmmxt_do(struct notifier_block *self, unsigned long cmd, void *t)
 {
@@ -80,6 +81,9 @@ static int __init pj4_cp0_init(void)
 {
 	u32 cp_access;
 
+	if (!cpu_is_pj4())
+		return 0;
+
 	cp_access = pj4_cp_access_read() & ~0xf;
 	pj4_cp_access_write(cp_access);