cpuidle/coupled: Add sanity check for safe_state_index

[mirror_ubuntu-artful-kernel.git] / drivers / cpuidle / driver.c

diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index 5db147859b9047db626d66e64bef2897a41822f2..389ade4572beb17c71ff44faf2ce884ad16baf54 100644 (file)
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -227,6 +227,10 @@ static int __cpuidle_register_driver(struct cpuidle_driver *drv)
        if (!drv || !drv->state_count)
                return -EINVAL;
 
+       ret = cpuidle_coupled_state_verify(drv);
+       if (ret)
+               return ret;
+
        if (cpuidle_disabled())
                return -ENODEV;