linux-kernel - [PATCH 3.19 132/175] ARM: vexpress: use ARM_CPU

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Message-Id: <20150304061047.779914450@linuxfoundation.org>
Date:	Tue,  3 Mar 2015 22:15:10 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	Nicolas Pitre <nico@...aro.org>,
	Liviu Dudau <liviu.dudau@....com>,
	Kevin Hilman <khilman@...aro.org>,
	Sudeep Holla <sudeep.holla@....com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Subject: [PATCH 3.19 132/175] ARM: vexpress: use ARM_CPU_SUSPEND if needed

3.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arnd Bergmann <arnd@...db.de>

commit 95fcedb027a27f32bf2434f9271635c380e57fb5 upstream.

The vexpress tc2 power management code calls mcpm_loopback, which
is only available if ARM_CPU_SUSPEND is enabled, otherwise we
get a link error:

arch/arm/mach-vexpress/built-in.o: In function `tc2_pm_init':
arch/arm/mach-vexpress/tc2_pm.c:389: undefined reference to `mcpm_loopback'

This explicitly selects ARM_CPU_SUSPEND like other platforms that
need it.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Fixes: 3592d7e002438 ("ARM: 8082/1: TC2: test the MCPM loopback during boot")
Acked-by: Nicolas Pitre <nico@...aro.org>
Acked-by: Liviu Dudau <liviu.dudau@....com>
Cc: Kevin Hilman <khilman@...aro.org>
Cc: Sudeep Holla <sudeep.holla@....com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/mach-vexpress/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/arm/mach-vexpress/Kconfig
+++ b/arch/arm/mach-vexpress/Kconfig
@@ -73,6 +73,7 @@ config ARCH_VEXPRESS_TC2_PM
 	depends on MCPM
 	select ARM_CCI
 	select ARCH_VEXPRESS_SPC
+	select ARM_CPU_SUSPEND
 	help
 	  Support for CPU and cluster power management on Versatile Express
 	  with a TC2 (A15x2 A7x3) big.LITTLE core tile.


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