linux-kernel - [ 41/46] ACPI / processor: Get power info before updating the C-states

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Message-Id: <20130124211150.730892447@linuxfoundation.org>
Date:	Thu, 24 Jan 2013 13:13:19 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk,
	Thomas Schlichter <thomas.schlichter@....de>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Subject: [ 41/46] ACPI / processor: Get power info before updating the C-states

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

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

From: Thomas Schlichter <thomas.schlichter@....de>

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 <thomas.schlichter@....de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -1203,6 +1203,7 @@ 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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