On Wed, Nov 02, 2022 at 05:04:11PM -0700, Luis Chamberlain wrote: > On Wed, Nov 02, 2022 at 02:14:24PM +0100, Guillermo Rodriguez Garcia wrote: > > I understand that device drivers should implement ->write_iter if they > > need to be written from kernel space, but evdev does not support this. > > What is the recommended way to have a layered device driver that can > > talk to evdev ? > > Shouldn't just writing write_iter support make this work? Writing to evdev just sound like a lot of troble. evdev is a tiny wrapper to expose the in-kernel input API to userspace. Anything in-kernel should just directly interact with the input subsystem.