On Thu, Jan 04, 2024 at 02:48:14PM +0800, Shifeng Li wrote: > The root cause is that mad_client and cm_client may init concurrently > when devices_rwsem write semaphore is downgraded in enable_device_and_get() like: That can't be true, the module loader infrastructue ensures those two things are sequential. You are trying to say that the post-client fixup stuff will still see the DEVICE_REGISTERED before it reaches the clients_rwsem lock? That probably just says the clients_rwsem should be obtained before changing the DEVICE_STATE too :\ Jason
