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cpuidle/coupled: Add sanity check for safe_state_index
[firefly-linux-kernel-4.4.55.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;