linux-kernel - [RFC PATCH 2/3] arm: psci: enable PSCI on UP systems

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Date:	Sat, 4 Jul 2015 21:01:49 +0800
From:	Jisheng Zhang <jszhang@...vell.com>
To:	<linux@....linux.org.uk>, <will.deacon@....com>,
	<mark.rutland@....com>, <daniel.lezcano@...aro.org>,
	<Catalin.Marinas@....com>, <Lorenzo.Pieralisi@....com>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, Jisheng Zhang <jszhang@...vell.com>
Subject: [RFC PATCH 2/3] arm: psci: enable PSCI on UP systems

This is to make calls like eg cpu_suspend can be made functional on UP too.

Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
---
 arch/arm/kernel/Makefile | 5 +----
 arch/arm/kernel/psci.c   | 2 ++
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index c57b2c0..2b1a60c 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -88,9 +88,6 @@ obj-$(CONFIG_DEBUG_LL)	+= debug.o
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
 
 obj-$(CONFIG_ARM_VIRT_EXT)	+= hyp-stub.o
-ifeq ($(CONFIG_ARM_PSCI),y)
-obj-y				+= psci-call.o
-obj-$(CONFIG_SMP)		+= psci.o
-endif
+obj-$(CONFIG_ARM_PSCI)		+= psci-call.o psci.o
 
 extra-y := $(head-y) vmlinux.lds
diff --git a/arch/arm/kernel/psci.c b/arch/arm/kernel/psci.c
index 61c04b0..7f6ff02 100644
--- a/arch/arm/kernel/psci.c
+++ b/arch/arm/kernel/psci.c
@@ -47,6 +47,7 @@
  *
  */
 
+#ifdef CONFIG_SMP
 extern void secondary_startup(void);
 
 static int psci_boot_secondary(unsigned int cpu, struct task_struct *idle)
@@ -128,3 +129,4 @@ struct smp_operations __initdata psci_smp_ops = {
 	.cpu_kill		= psci_cpu_kill,
 #endif
 };
+#endif
-- 
2.1.4

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