Re: [PATCH] rust: usb: fix broken call to T::disconnect()

[Greg KH <gregkh@linuxfoundation.org>]

On Mon, Nov 03, 2025 at 12:01:03PM +0100, Danilo Krummrich wrote:
> A refactoring of Device::drvdata_obtain() broke T::disconnect() in the
> USB abstractions.
> 
> """
> error[E0599]: no method named `data` found for struct `core::pin::Pin<kbox::Box<T, Kmalloc>>` in the current scope
>   --> rust/kernel/usb.rs:92:34
>    |
> 92 |         T::disconnect(intf, data.data());
>    |                                  ^^^^ method not found in `core::pin::Pin<kbox::Box<T, Kmalloc>>`
> 
> error: aborting due to 1 previous error
> 
> For more information about this error, try `rustc --explain E0599`.
> make[2]: *** [rust/Makefile:553: rust/kernel.o] Error 1
> make[1]: *** [/builddir/build/BUILD/kernel-6.18.0-build/kernel-next-20251103/linux-6.18.0-0.0.next.20251103.436.vanilla.fc44.x86_64/Makefile:1316: prepare] Error 2
> make: *** [Makefile:256: __sub-make] Error 2
> """
> 
> This slipped through, since the USB abstractions are globally disabled.
> However, the USB tree recently enabled them, hence it showed up in
> linux-next.

Sorry about this, should we also enable it in the driver-core-next tree
as well, to catch these types of things?

greg k-h