Messages in this thread Patch in this message | | | From | Huacai Chen <> | Subject | [PATCH V2] MIPS: Fix poweroff failure when HOTPLUG_CPU configured. | Date | Mon, 13 Aug 2012 20:52:24 +0800 |
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When poweroff machine, kernel_power_off() call disable_nonboot_cpus(). And if we have HOTPLUG_CPU configured, disable_nonboot_cpus() is not an empty function but attempt to actually disable the nonboot cpus. Since system state is SYSTEM_POWER_OFF, play_dead() won't be called and thus disable_nonboot_cpus() hangs. Therefore, we make this patch to avoid poweroff failure.
V2: Make the From: address the same as Signed-off-by address.
Signed-off-by: Huacai Chen <chenhc@lemote.com> Signed-off-by: Hongliang Tao <taohl@lemote.com> Signed-off-by: Hua Yan <yanh@lemote.com> Cc: Yong Zhang <yong.zhang@windriver.com> Cc: stable@vger.kernel.org --- arch/mips/kernel/process.c | 4 +--- 1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index e9a5fd7..69b17a9 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -72,9 +72,7 @@ void __noreturn cpu_idle(void) } } #ifdef CONFIG_HOTPLUG_CPU - if (!cpu_online(cpu) && !cpu_isset(cpu, cpu_callin_map) && - (system_state == SYSTEM_RUNNING || - system_state == SYSTEM_BOOTING)) + if (!cpu_online(cpu) && !cpu_isset(cpu, cpu_callin_map)) play_dead(); #endif rcu_idle_exit(); -- 1.7.7.3
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