On Thu, Apr 19, 2018 at 03:10:27PM +0200, Alexandre Belloni wrote: > On 19/04/2018 14:41:27+0200, Christoph Hellwig wrote: > > And stop trying to get a reference on the submodule, procfs code deals > > with release after and unloaded module and thus removed proc entry. > > > > Are you sure about that? The rtc module is not the one adding the procfs > file so I'm not sure how the procfs code can handle it. The proc file is removed from this call chain: <driver>_exit (module_exit handler) -> rtc_device_unregister -> rtc_proc_del_device -> remove_proc_entry remove_proc_entry takes care of waiting for currently active file operation instances and makes sure every new operation never calls into the actual proc file ops. Same behavior as in RTC exists all over the kernel. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html