From: Zhang Rui <rui.zhang@xxxxxxxxx> The ACPI device node for the cpu has already been unregistered when acpi_processor_handle_eject is called. Thus we should offline the cpu and continue, rather than a failure here. http://bugzilla.kernel.org/show_bug.cgi?id=9772 Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx> Signed-off-by: Len Brown <len.brown@xxxxxxxxx> --- drivers/acpi/processor_core.c | 6 +++--- kernel/cpu.c | 1 + 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index a825b43..3f90965 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -1016,9 +1016,9 @@ static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu) static int acpi_processor_handle_eject(struct acpi_processor *pr) { - if (cpu_online(pr->id)) { - return (-EINVAL); - } + if (cpu_online(pr->id)) + cpu_down(pr->id); + arch_unregister_cpu(pr->id); acpi_unmap_lsapic(pr->id); return (0); diff --git a/kernel/cpu.c b/kernel/cpu.c index 2011ad8..380bce4 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -287,6 +287,7 @@ int cpu_down(unsigned int cpu) cpu_maps_update_done(); return err; } +EXPORT_SYMBOL(cpu_down); #endif /*CONFIG_HOTPLUG_CPU*/ /* Requires cpu_add_remove_lock to be held */ -- 1.5.6.1.89.gd544 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
