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path: root/drivers/cpuidle
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Diffstat (limited to 'drivers/cpuidle')
-rw-r--r--drivers/cpuidle/cpuidle.c2
-rw-r--r--drivers/cpuidle/driver.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 77304b6b8aef..f7cab5e9c4d6 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -268,7 +268,7 @@ int cpuidle_enable_device(struct cpuidle_device *dev)
if (!drv || !cpuidle_curr_governor)
return -EIO;
if (!dev->state_count)
- return -EINVAL;
+ dev->state_count = drv->state_count;
if (dev->registered == 0) {
ret = __cpuidle_register_device(dev);
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index 284d7af5a9c8..40cd3f3024df 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -47,7 +47,7 @@ static void __cpuidle_register_driver(struct cpuidle_driver *drv)
*/
int cpuidle_register_driver(struct cpuidle_driver *drv)
{
- if (!drv)
+ if (!drv || !drv->state_count)
return -EINVAL;
if (cpuidle_disabled())