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authorChao Xie Linux <xiechao.mail@gmail.com>2014-04-02 02:50:03 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-04-08 17:55:28 +0100
commita5d4506d070adb785459bf142ef707d7c5fe3b84 (patch)
tree256f2d83c687eaebd5ef44e441e503fefab355f0
parentfdb487f5c961b94486a78fa61fa28b8eff1954ab (diff)
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>
-rw-r--r--arch/arm/kernel/pj4-cp0.c4
1 files changed, 4 insertions, 0 deletions
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);