Re: [PATCH 2/2] samples: rust: add a USB driver sample

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Tue, Sep 09, 2025 at 01:19:12PM +0200, Simon Neuenhausen wrote:
> Hi,
> 
> > On 06.09.25 17:46, Daniel Almeida wrote:
> 
> > As I said to Greg above, I’m here to help if anyone wants to write a USB
> > driver. Those interested
> are free to reach out to me and we will work together to merge the required
> abstractions with a real user in mind. Hopefully this encourages others to
> join in this work :)
> I had planned on writing a USB driver for TI nspire calculators, that would
> make them mountable as USB mass storage devices, since they use a
> proprietary USB protocol, that usually requires paid software from TI. At
> the time I gave up on that, due to the lack of USB support in RFL, but I
> could revive the effort using this.

usb-storage is really just SCSI, so if you want to try to do this, you
are going to have to write a scsi driver for the calculator.  Not
something you probably really want to do :(

Odd are this would be a much simpler userspace program instead, as you
can control USB devices directly from userspace, no kernel driver
needed.

thanks,

greg k-h