On Thu, Oct 27, 2016 at 08:19:27PM +0800, Hanjun Guo wrote: > I'm trying to using this patch set to solve the functional dependency > between devices and irqchip, which are both ACPI platform devices. > irqchip needs to be probed before the devices connecting to them, > which specifically, it's the mbi-gen support I send out recently: > > https://lkml.org/lkml/2016/10/25/453 > > But I didn't see an example to do so in this patch set, and seems that > some extra code needs to be added for that purpose, could you give me > some suggestions for how to do that then I can work on and test against > your patch set?
If the consumers can detect that there's a consumer on which they depend, you could call device_link_add() from their ->probe hook. Generally the earliest point in time when device links can be added is after device_initialize() has been called for the consumer and device_add() has been called for the supplier. (At least that's my understanding.) HTH, Lukas
