rust: device: narrow the generic of drvdata_obtain()

Let T be the actual private driver data type without the surrounding
box, as it leaves less room for potential bugs.

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/rust/kernel/usb.rs b/rust/kernel/usb.rs
index fa8367c0dbaa..92215fdc3c6a 100644
--- a/rust/kernel/usb.rs
+++ b/rust/kernel/usb.rs
@@ -87,9 +87,9 @@ impl<T: Driver + 'static> Adapter<T> {
         // SAFETY: `disconnect_callback` is only ever called after a successful call to
         // `probe_callback`, hence it's guaranteed that `Device::set_drvdata()` has been called
         // and stored a `Pin<KBox<T>>`.
-        let data = unsafe { dev.drvdata_obtain::<Pin<KBox<T>>>() };
+        let data = unsafe { dev.drvdata_obtain::<T>() };
 
-        T::disconnect(intf, data.as_ref());
+        T::disconnect(intf, data.data());
     }
 }