On Sat, Sep 06, 2025 at 09:41:16AM -0300, Daniel Almeida wrote: > > > >> > >> I thought that an iterative approach would work here, i.e.: merge this, then > >> URBs, then more stuff, etc. > > > > Ah, that makes sense, I didn't realize you want that here. What USB > > device do you want to write a rust driver for? Are you going to need > > bindings to the usb major number, or is it going to talk to some other > > subsystem instead? > > > > Right now, these bindings don't really do anything USB specific at all > > except allow a driver to bind to a device. > > > > thanks, > > > > greg k-h > > To be honest, I'm trying to pave the way for others. > > I often hear people saying that they would look into Rust drivers if only they > did not have to write all the surrounding infrastructure themselves. On the > other hand, there is no infrastructure because there are no drivers. It's a > chicken and egg problem that I am trying to solve. Sure, but a framework like this (probe/disconnect), really isn't USB, it's just driver core stuff :) > It's also a cool opportunity to learn about USB, but I don't have any plans > for a driver at the moment other than a instructional sample driver in Rust. Then let's not add bindings without a real user please. We don't want to maintain them for no good reason. > Give me a few more weeks and I'll come up with the code for the other things > you've pointed out. > > By the way, I wonder how testing would work. I tested this by plugging in my > mouse and fiddling around with /sys/bus/usb/drivers/rust_driver_usb/new_id. I > am not sure how this is going to work once I start looking into data transfer > and etc. Perhaps there's a simple device out there that I should target? Or > maybe there's a way to "fake" a USB device that would work with the sample > driver for demonstration purposes. You can use the usb-gadget subsystem and dummy-hcd to create a loop-back for a virtual USB device. That's how syzbot does USB driver fuzz testing, there should be some documentation on that somewhere in the tree. thanks greg k-h
