From mboxrd@z Thu Jan  1 00:00:00 1970
From: Claude Code Review Bot <claude-review@example.com>
To: dri-devel-reviews@example.com
Subject: Claude review: rust: faux: Allow retrieving a bound Device
Date: Thu, 04 Jun 2026 12:29:54 +1000
Message-ID: <review-patch5-20260602172807.1051806-6-lyude@redhat.com>
In-Reply-To: <20260602172807.1051806-6-lyude@redhat.com>
References: <20260602172807.1051806-1-lyude@redhat.com> <20260602172807.1051806-6-lyude@redhat.com>
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Patch Review

Changes `AsRef<device::Device>` to `AsRef<device::Device<device::Bound>>`:
```rust
-impl AsRef<device::Device> for Registration {
-    fn as_ref(&self) -> &device::Device {
+impl AsRef<device::Device<device::Bound>> for Registration {
+    fn as_ref(&self) -> &device::Device<device::Bound> {
```

The justification is correct =E2=80=94 a `Registration` is proof of device =
binding, so returning `Device<Bound>` is sound. The added invariant bullet =
point documents this:
```
+/// - This object is proof that the object described by this `Registration=
` is bound to a device.
```

**Potential concern**: This is a breaking API change =E2=80=94 any existing=
 code calling `registration.as_ref()` expecting `&device::Device` (without =
`Bound`) will break. Since this is in the kernel tree and patch 6 is the co=
nsumer, this is fine, but downstream users of the faux crate should be awar=
e.

No issues for this series.

---
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