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    Subject[ 38/82] ACPI processor: Fix tick_broadcast_mask online/offline regression
    Date
    From: Greg KH <gregkh@linuxfoundation.org>

    3.5-stable review patch. If anyone has any objections, please let me know.

    ------------------

    From: Feng Tang <feng.tang@intel.com>

    commit b7db60f45d74497c723dc7ae1370cf0b37dfb0d8 upstream.

    In commit 99b725084 "ACPI processor hotplug: Delay acpi_processor_start()
    call for hotplugged cores", acpi_processor_hotplug(pr) was wrongly replaced
    by acpi_processor_cst_has_changed() inside the acpi_cpu_soft_notify(). This
    patch will restore it back, fixing the tick_broadcast_mask regression:
    https://lkml.org/lkml/2012/7/30/169

    Signed-off-by: Feng Tang <feng.tang@intel.com>
    Cc: Thomas Renninger <trenn@suse.de>
    Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
    Reviewed-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
    Signed-off-by: Len Brown <len.brown@intel.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/acpi/processor_driver.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/acpi/processor_driver.c
    +++ b/drivers/acpi/processor_driver.c
    @@ -442,7 +442,7 @@ static int acpi_cpu_soft_notify(struct n
    /* Normal CPU soft online event */
    } else {
    acpi_processor_ppc_has_changed(pr, 0);
    - acpi_processor_cst_has_changed(pr);
    + acpi_processor_hotplug(pr);
    acpi_processor_reevaluate_tstate(pr, action);
    acpi_processor_tstate_has_changed(pr);
    }



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