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

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

From: Thomas Schlichter <[email protected]>

commit f427e5f1cf75bba84cccdac1d8a90552d9ae1065 upstream.

acpi_processor_get_power_info() has to be called before
acpi_processor_setup_cpuidle_states() to have the latest
information available. This fixes the missing C-state information
after AC-->DC transition.

Signed-off-by: Thomas Schlichter <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 drivers/acpi/processor_idle.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1208,6 +1208,7 @@ int acpi_processor_cst_has_changed(struc
                }
 
                /* Populate Updated C-state information */
+               acpi_processor_get_power_info(pr);
                acpi_processor_setup_cpuidle_states(pr);
 
                /* Enable all cpuidle devices */


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