Re: [PATCH] perf: arm_cspmu: fix error handling in arm_cspmu_impl_unregister()

driver_find_device() calls get_device() to increment the reference count once a matching device is found. device_release_driver() releases the driver, but it does not decrease the reference count that was incremented by driver_find_device(). At the end of the loop, there is no put_device() to balance the reference count. To avoid reference count leakage, add put_device() to decrease the reference count.

Can a summary phrase like “Prevent reference count leaks in arm_cspmu_impl_unregister()” be more appropriate?

Regards, Markus