On Thu, Jul 13, 2023 at 01:55:34PM +0530, Souradeep Chowdhury wrote: > > > On 7/12/2023 10:10 PM, Greg KH wrote: > > On Wed, Jul 12, 2023 at 01:52:37PM +0530, Souradeep Chowdhury wrote: > > > This patch series adds the notifier chain to the Embedded USB Debug(EUD) driver. > > > The notifier chain is used to check the role switch status of EUD. Since EUD can > > > function only in device mode, other modules trying to do role-switch on the same > > > port have to first check the EUD status by calling this notifier chain and based > > > on the status proceed or block their role-switching step. The modules can call > > > the notifier through the call eud_notifier_call_chain and pass their own > > > role switch state as the argument. This chain will also be able to handle the > > > scenario of multiple modules switching roles on the same port since this can > > > create a priority and ordering among them for conflict resolution. > > > > You are adding a new api that no one is actually using, so why would we > > accept this at all? > > > > And how can we actually review it without any real users? > > Ack. The next version of this will be posted along with the usage > of these apis for ordering the role-switch. Also note that I hate notifier call chains, so you better have a very good reason for why they are required and can't be done in any other normal way instead :) good luck! greg k-h