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From b5a3a19e3efa6238c6a00a8f36a8ab2c25eeebc3 Mon Sep 17 00:00:00 2001
From: Kumar Gala <galak@codeaurora.org>
Date: Fri, 31 Jan 2014 13:48:29 -0600
Subject: [PATCH 003/182] ARM: msm: kill off hotplug.c
Right now hotplug.c only really implements msm_cpu_die as a wfi. Just
move that implementation into platsmp.c. At the same time we use the
existing wfi() instead of inline asm.
Signed-off-by: Kumar Gala <galak@codeaurora.org>
---
arch/arm/mach-msm/Makefile | 1 -
arch/arm/mach-msm/common.h | 1 -
arch/arm/mach-msm/hotplug.c | 51 -------------------------------------------
arch/arm/mach-msm/platsmp.c | 7 ++++++
4 files changed, 7 insertions(+), 53 deletions(-)
delete mode 100644 arch/arm/mach-msm/hotplug.c
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -18,7 +18,6 @@ obj-$(CONFIG_MSM_SCM) += scm.o scm-boot.
CFLAGS_scm.o :=$(call as-instr,.arch_extension sec,-DREQUIRES_SEC=1)
-obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
obj-$(CONFIG_SMP) += platsmp.o
obj-$(CONFIG_MACH_TROUT) += board-trout.o board-trout-gpio.o board-trout-mmc.o devices-msm7x00.o
--- a/arch/arm/mach-msm/common.h
+++ b/arch/arm/mach-msm/common.h
@@ -24,7 +24,6 @@ extern void __iomem *__msm_ioremap_calle
unsigned int mtype, void *caller);
extern struct smp_operations msm_smp_ops;
-extern void msm_cpu_die(unsigned int cpu);
struct msm_mmc_platform_data;
--- a/arch/arm/mach-msm/hotplug.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2002 ARM Ltd.
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/smp.h>
-
-#include <asm/smp_plat.h>
-
-#include "common.h"
-
-static inline void cpu_enter_lowpower(void)
-{
-}
-
-static inline void cpu_leave_lowpower(void)
-{
-}
-
-static inline void platform_do_lowpower(unsigned int cpu)
-{
- asm("wfi"
- :
- :
- : "memory", "cc");
-}
-
-/*
- * platform-specific code to shutdown a CPU
- *
- * Called with IRQs disabled
- */
-void __ref msm_cpu_die(unsigned int cpu)
-{
- /*
- * we're ready for shutdown now, so do it
- */
- cpu_enter_lowpower();
- platform_do_lowpower(cpu);
-
- /*
- * bring this CPU back into the world of cache
- * coherency, and then restore interrupts
- */
- cpu_leave_lowpower();
-}
--- a/arch/arm/mach-msm/platsmp.c
+++ b/arch/arm/mach-msm/platsmp.c
@@ -29,6 +29,13 @@ extern void secondary_startup(void);
static DEFINE_SPINLOCK(boot_lock);
+#ifdef CONFIG_HOTPLUG_CPU
+static void __ref msm_cpu_die(unsigned int cpu)
+{
+ wfi();
+}
+#endif
+
static inline int get_core_count(void)
{
/* 1 + the PART[1:0] field of MIDR */
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