diff options
Diffstat (limited to 'rust/kernel/acpi.rs')
| -rw-r--r-- | rust/kernel/acpi.rs | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/rust/kernel/acpi.rs b/rust/kernel/acpi.rs index 2af4d4f92924..7ae317368b00 100644 --- a/rust/kernel/acpi.rs +++ b/rust/kernel/acpi.rs @@ -2,7 +2,11 @@ //! Advanced Configuration and Power Interface abstractions. -use crate::{bindings, device_id::RawDeviceId, prelude::*}; +use crate::{ + bindings, + device_id::{RawDeviceId, RawDeviceIdIndex}, + prelude::*, +}; /// IdTable type for ACPI drivers. pub type IdTable<T> = &'static dyn kernel::device_id::IdTable<DeviceId, T>; @@ -12,13 +16,14 @@ pub type IdTable<T> = &'static dyn kernel::device_id::IdTable<DeviceId, T>; #[derive(Clone, Copy)] pub struct DeviceId(bindings::acpi_device_id); -// SAFETY: -// * `DeviceId` is a `#[repr(transparent)` wrapper of `struct acpi_device_id` and does not add -// additional invariants, so it's safe to transmute to `RawType`. -// * `DRIVER_DATA_OFFSET` is the offset to the `data` field. +// SAFETY: `DeviceId` is a `#[repr(transparent)]` wrapper of `acpi_device_id` and does not add +// additional invariants, so it's safe to transmute to `RawType`. unsafe impl RawDeviceId for DeviceId { type RawType = bindings::acpi_device_id; +} +// SAFETY: `DRIVER_DATA_OFFSET` is the offset to the `driver_data` field. +unsafe impl RawDeviceIdIndex for DeviceId { const DRIVER_DATA_OFFSET: usize = core::mem::offset_of!(bindings::acpi_device_id, driver_data); fn index(&self) -> usize { |