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-rw-r--r--drivers/cpuidle/driver.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index 2257004..826b5c0 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -45,8 +45,11 @@ EXPORT_SYMBOL_GPL(cpuidle_register_driver);
*/
void cpuidle_unregister_driver(struct cpuidle_driver *drv)
{
- if (!drv)
+ if (drv != cpuidle_curr_driver) {
+ WARN(1, "invalid cpuidle_unregister_driver(%s)\n",
+ drv->name);
return;
+ }
spin_lock(&cpuidle_driver_lock);
cpuidle_curr_driver = NULL;
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