From: James Morse <james.morse@xxxxxxx> LoongArch provides its own arch_unregister_cpu(). This clears the hotpluggable flag, then unregisters the CPU. It isn't necessary to clear the hotpluggable flag when unregistering a cpu. unregister_cpu() writes NULL to the percpu cpu_sys_devices pointer, meaning cpu_is_hotpluggable() will return false, as get_cpu_device() has returned NULL. Remove arch_unregister_cpu() and use the __weak version. Signed-off-by: James Morse <james.morse@xxxxxxx> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx> Signed-off-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx> --- arch/loongarch/kernel/topology.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/arch/loongarch/kernel/topology.c b/arch/loongarch/kernel/topology.c index bf58351beac1..b595edbfdbcd 100644 --- a/arch/loongarch/kernel/topology.c +++ b/arch/loongarch/kernel/topology.c @@ -19,13 +19,4 @@ int arch_register_cpu(int cpu) return register_cpu(c, cpu); } EXPORT_SYMBOL(arch_register_cpu); - -void arch_unregister_cpu(int cpu) -{ - struct cpu *c = &per_cpu(cpu_devices, cpu); - - c->hotpluggable = 0; - unregister_cpu(c); -} -EXPORT_SYMBOL(arch_unregister_cpu); #endif -- 2.30.2
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