From: Rob Herring <rob.herring@calxeda.com>
Date: Thu, 29 Aug 2013 12:43:52 +0000 (-0500)
Subject: ARM: xen: only set pm function ptrs for Xen guests
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=863008a9b50259d3a4b1c9a387804f9509413de4;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

ARM: xen: only set pm function ptrs for Xen guests

commit 9dd4b2944c46e1fdbd0a516c221c8a2670cbf005 upstream.

xen_pm_init was unconditionally setting pm_power_off and arm_pm_restart
function pointers. This breaks multi-platform kernels. Make this
conditional on running as a Xen guest and make it a late_initcall to
ensure it is setup after platform code for Dom0.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 05db95d010a..81edd31bb4a 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -273,12 +273,15 @@ core_initcall(xen_guest_init);
 
 static int __init xen_pm_init(void)
 {
+	if (!xen_domain())
+		return -ENODEV;
+
 	pm_power_off = xen_power_off;
 	arm_pm_restart = xen_restart;
 
 	return 0;
 }
-subsys_initcall(xen_pm_init);
+late_initcall(xen_pm_init);
 
 static irqreturn_t xen_arm_callback(int irq, void *arg)
 {