OMAP3: cpuidle: Update statistics for correct state

When 'enable_off_mode' is 0, the target power state for MPU
and CORE was locally changed to PWRDM_POWER_RET but, the
statistics are updated for idle state originally selected
by the governor.

This patch 'invalidates' the idle states that lead either of
MPU or Core to PWRDM_POWER_OFF state when 'enable_off_mode'
is '0'. The states are valid once 'enable_off_mode' is set
to '1'.

Added function next_valid_state() to check if current state
is valid; else get the next valid state. It is called from
omap3_enter_idle_bm().

Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 5087b153b093..5320229926e4 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -941,6 +941,10 @@ void omap3_pm_off_mode_enable(int enable)
         else
                 state = PWRDM_POWER_RET;
 
+#ifdef CONFIG_CPU_IDLE
+        omap3_cpuidle_update_states();
+#endif
+
         list_for_each_entry(pwrst, &pwrst_list, node) {
                 pwrst->next_state = state;
                 set_pwrdm_state(pwrst->pwrdm, state);