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path: root/drivers/cpuidle/driver.c
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Diffstat (limited to 'drivers/cpuidle/driver.c')
-rw-r--r--drivers/cpuidle/driver.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index 58bf3b1ac9c4..87db3877fead 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -18,9 +18,10 @@ static struct cpuidle_driver *cpuidle_curr_driver;
DEFINE_SPINLOCK(cpuidle_driver_lock);
int cpuidle_driver_refcount;
-static void __cpuidle_register_driver(struct cpuidle_driver *drv)
+static void set_power_states(struct cpuidle_driver *drv)
{
int i;
+
/*
* cpuidle driver should set the drv->power_specified bit
* before registering if the driver provides
@@ -35,13 +36,10 @@ static void __cpuidle_register_driver(struct cpuidle_driver *drv)
* an power value of -1. So we use -2, -3, etc, for other
* c-states.
*/
- if (!drv->power_specified) {
- for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++)
- drv->states[i].power_usage = -1 - i;
- }
+ for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++)
+ drv->states[i].power_usage = -1 - i;
}
-
/**
* cpuidle_register_driver - registers a driver
* @drv: the driver
@@ -59,13 +57,16 @@ int cpuidle_register_driver(struct cpuidle_driver *drv)
spin_unlock(&cpuidle_driver_lock);
return -EBUSY;
}
- __cpuidle_register_driver(drv);
+
+ if (!drv->power_specified)
+ set_power_states(drv);
+
cpuidle_curr_driver = drv;
+
spin_unlock(&cpuidle_driver_lock);
return 0;
}
-
EXPORT_SYMBOL_GPL(cpuidle_register_driver);
/**
@@ -96,7 +97,6 @@ void cpuidle_unregister_driver(struct cpuidle_driver *drv)
spin_unlock(&cpuidle_driver_lock);
}
-
EXPORT_SYMBOL_GPL(cpuidle_unregister_driver);
struct cpuidle_driver *cpuidle_driver_ref(void)