linux-kernel - [RFC PATCH 14/16] x86/xen: support poweroff through poweroff handler call chain

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Date:	Tue, 30 Sep 2014 11:00:54 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	linux-kernel@...r.kernel.org
Cc:	linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-c6x-dev@...ux-c6x.org, linux-ia64@...r.kernel.org,
	linux-metag@...r.kernel.org, linux-mips@...ux-mips.org,
	linux-parisc@...r.kernel.org, linux-sh@...r.kernel.org,
	xen-devel@...ts.xenproject.org, Guenter Roeck <linux@...ck-us.net>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [RFC PATCH 14/16] x86/xen: support poweroff through poweroff handler call chain

The kernel core now supports a poweroff handler call chain
to remove power from the system. Call it if pm_power_off
is set to NULL.

Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: H. Peter Anvin <hpa@...or.com>
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
 arch/x86/xen/enlighten.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index c0cb11f..645d00f 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1322,6 +1322,8 @@ static void xen_machine_power_off(void)
 {
 	if (pm_power_off)
 		pm_power_off();
+	else
+		do_kernel_poweroff();
 	xen_reboot(SHUTDOWN_poweroff);
 }
 
-- 
1.9.1

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