1 files changed, 17 insertions, 1 deletions
diff --git a/rust/kernel/pci.rs b/rust/kernel/pci.rs
index 34f0db8054fe..8b884e324dcf 100644
--- a/rust/kernel/pci.rs
+++ b/rust/kernel/pci.rs
@@ -90,7 +90,9 @@ impl<T: Driver + 'static> Adapter<T> {
         // SAFETY: `remove_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 _ = unsafe { pdev.as_ref().drvdata_obtain::<Pin<KBox<T>>>() };
+        let data = unsafe { pdev.as_ref().drvdata_obtain::<Pin<KBox<T>>>() };
+
+        T::unbind(pdev, data.as_ref());
     }
 }
 
@@ -237,6 +239,20 @@ pub trait Driver: Send {
     /// Called when a new platform device is added or discovered.
     /// Implementers should attempt to initialize the device here.
     fn probe(dev: &Device<device::Core>, id_info: &Self::IdInfo) -> Result<Pin<KBox<Self>>>;
+
+    /// Platform driver unbind.
+    ///
+    /// Called when a [`Device`] is unbound from its bound [`Driver`]. Implementing this callback
+    /// is optional.
+    ///
+    /// This callback serves as a place for drivers to perform teardown operations that require a
+    /// `&Device<Core>` or `&Device<Bound>` reference. For instance, drivers may try to perform I/O
+    /// operations to gracefully tear down the device.
+    ///
+    /// Otherwise, release operations for driver resources should be performed in `Self::drop`.
+    fn unbind(dev: &Device<device::Core>, this: Pin<&Self>) {
+        let _ = (dev, this);
+    }
 }
 
 /// The PCI device representation.