2014-08-30 17:32:58 +08:00
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From b5a3a19e3efa6238c6a00a8f36a8ab2c25eeebc3 Mon Sep 17 00:00:00 2001
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From: Kumar Gala <galak@codeaurora.org>
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Date: Fri, 31 Jan 2014 13:48:29 -0600
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Subject: [PATCH 003/182] ARM: msm: kill off hotplug.c
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Right now hotplug.c only really implements msm_cpu_die as a wfi. Just
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move that implementation into platsmp.c. At the same time we use the
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existing wfi() instead of inline asm.
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Signed-off-by: Kumar Gala <galak@codeaurora.org>
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---
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arch/arm/mach-msm/Makefile | 1 -
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arch/arm/mach-msm/common.h | 1 -
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arch/arm/mach-msm/hotplug.c | 51 -------------------------------------------
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arch/arm/mach-msm/platsmp.c | 7 ++++++
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4 files changed, 7 insertions(+), 53 deletions(-)
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delete mode 100644 arch/arm/mach-msm/hotplug.c
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--- a/arch/arm/mach-msm/Makefile
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+++ b/arch/arm/mach-msm/Makefile
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2014-09-11 05:40:19 +08:00
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@@ -18,7 +18,6 @@ obj-$(CONFIG_MSM_SCM) += scm.o scm-boot.
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2014-08-30 17:32:58 +08:00
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CFLAGS_scm.o :=$(call as-instr,.arch_extension sec,-DREQUIRES_SEC=1)
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-obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
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obj-$(CONFIG_SMP) += platsmp.o
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obj-$(CONFIG_MACH_TROUT) += board-trout.o board-trout-gpio.o board-trout-mmc.o devices-msm7x00.o
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--- a/arch/arm/mach-msm/common.h
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+++ b/arch/arm/mach-msm/common.h
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2014-09-11 05:40:19 +08:00
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@@ -24,7 +24,6 @@ extern void __iomem *__msm_ioremap_calle
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2014-08-30 17:32:58 +08:00
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unsigned int mtype, void *caller);
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extern struct smp_operations msm_smp_ops;
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-extern void msm_cpu_die(unsigned int cpu);
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struct msm_mmc_platform_data;
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--- a/arch/arm/mach-msm/hotplug.c
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+++ /dev/null
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@@ -1,51 +0,0 @@
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-/*
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- * Copyright (C) 2002 ARM Ltd.
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- * All Rights Reserved
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- */
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-#include <linux/kernel.h>
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-#include <linux/errno.h>
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-#include <linux/smp.h>
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-
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-#include <asm/smp_plat.h>
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-
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-#include "common.h"
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-
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-static inline void cpu_enter_lowpower(void)
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-{
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-}
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-
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-static inline void cpu_leave_lowpower(void)
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-{
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-}
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-
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-static inline void platform_do_lowpower(unsigned int cpu)
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-{
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- asm("wfi"
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- :
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- :
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- : "memory", "cc");
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-}
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-
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-/*
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- * platform-specific code to shutdown a CPU
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- *
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- * Called with IRQs disabled
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- */
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-void __ref msm_cpu_die(unsigned int cpu)
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-{
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- /*
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- * we're ready for shutdown now, so do it
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- */
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- cpu_enter_lowpower();
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- platform_do_lowpower(cpu);
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-
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- /*
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- * bring this CPU back into the world of cache
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- * coherency, and then restore interrupts
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- */
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- cpu_leave_lowpower();
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-}
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--- a/arch/arm/mach-msm/platsmp.c
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+++ b/arch/arm/mach-msm/platsmp.c
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@@ -29,6 +29,13 @@ extern void secondary_startup(void);
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static DEFINE_SPINLOCK(boot_lock);
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+#ifdef CONFIG_HOTPLUG_CPU
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+static void __ref msm_cpu_die(unsigned int cpu)
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+{
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+ wfi();
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+}
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+#endif
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+
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static inline int get_core_count(void)
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{
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/* 1 + the PART[1:0] field of MIDR */
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