From b5a3a19e3efa6238c6a00a8f36a8ab2c25eeebc3 Mon Sep 17 00:00:00 2001 From: Kumar Gala 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 --- 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 diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile index 721f27f..8327f60 100644 --- a/arch/arm/mach-msm/Makefile +++ b/arch/arm/mach-msm/Makefile @@ -18,7 +18,6 @@ obj-$(CONFIG_MSM_SCM) += scm.o scm-boot.o CFLAGS_scm.o :=$(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 diff --git a/arch/arm/mach-msm/common.h b/arch/arm/mach-msm/common.h index 33c7725..0a4899b 100644 --- a/arch/arm/mach-msm/common.h +++ b/arch/arm/mach-msm/common.h @@ -24,7 +24,6 @@ extern void __iomem *__msm_ioremap_caller(phys_addr_t phys_addr, size_t size, 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; diff --git a/arch/arm/mach-msm/hotplug.c b/arch/arm/mach-msm/hotplug.c deleted file mode 100644 index cea80fc..0000000 --- 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 -#include -#include - -#include - -#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(); -} diff --git a/arch/arm/mach-msm/platsmp.c b/arch/arm/mach-msm/platsmp.c index 3721b31..251a91e 100644 --- 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 */ -- 1.7.10.4