Danilo Krummrich 478da53e5b rust: drm: Wrap ioctl dispatch in RegistrationGuard ...

Make Ioctl handlers receive a &Device<T, Registered> reference, proving
at the type level that the device is registered and its parent bus
device is bound.

This is achieved by calling registration_guard() on the Device<T, Ioctl>
obtained in ioctl dispatch context. If the device has been unplugged,
the ioctl returns -ENODEV without calling the handler.

To resolve the driver type parameter T for type inference, which the
compiler cannot propagate through method resolution and associated-type
projections alone, a dead-code closure and a helper function are used as
a type-inference anchor.

Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Tested-by: Deborah Brouwer <deborah.brouwer@collabora.com>
Link: https://patch.msgid.link/20260628145406.2107056-14-dakr@kernel.org
[ Use imperative mood in commit message; clarify __dev_ctx_cast() doc
  comment to reflect Ioctl-to-Registered cast. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

2026-07-12 15:59:28 +02:00

..

gem

rust: drm/gem: remove DeviceContext from shmem::Object

2026-07-12 15:56:52 +02:00

gpuvm

rust: drm: gpuvm: add SmContext lifetime bound

2026-06-12 22:28:36 +02:00

device.rs

rust: drm: Add RegistrationGuard for drm_dev_enter/exit critical sections

2026-07-12 15:56:52 +02:00

driver.rs

rust: drm: Add RegistrationGuard for drm_dev_enter/exit critical sections

2026-07-12 15:56:52 +02:00

file.rs

rust/drm: Remove imports covered by prelude::*

2026-02-24 16:11:41 +01:00

ioctl.rs

rust: drm: Wrap ioctl dispatch in RegistrationGuard

2026-07-12 15:59:28 +02:00

mod.rs

rust: drm: Add RegistrationGuard for drm_dev_enter/exit critical sections

2026-07-12 15:56:52 +02:00