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Diffstat (limited to 'rust/kernel/drm/gem/mod.rs')
-rw-r--r--rust/kernel/drm/gem/mod.rs25
1 files changed, 14 insertions, 11 deletions
diff --git a/rust/kernel/drm/gem/mod.rs b/rust/kernel/drm/gem/mod.rs
index d8765e61c6c2..a822aedee949 100644
--- a/rust/kernel/drm/gem/mod.rs
+++ b/rust/kernel/drm/gem/mod.rs
@@ -10,7 +10,8 @@ use crate::{
drm::driver::{AllocImpl, AllocOps},
error::{to_result, Result},
prelude::*,
- types::{ARef, AlwaysRefCounted, Opaque},
+ sync::aref::{ARef, AlwaysRefCounted},
+ types::Opaque,
};
use core::{mem, ops::Deref, ptr::NonNull};
@@ -51,7 +52,7 @@ pub trait IntoGEMObject: Sized + super::private::Sealed + AlwaysRefCounted {
/// - `self_ptr` must be a valid pointer to `Self`.
/// - The caller promises that holding the immutable reference returned by this function does
/// not violate rust's data aliasing rules and remains valid throughout the lifetime of `'a`.
- unsafe fn as_ref<'a>(self_ptr: *mut bindings::drm_gem_object) -> &'a Self;
+ unsafe fn from_raw<'a>(self_ptr: *mut bindings::drm_gem_object) -> &'a Self;
}
// SAFETY: All gem objects are refcounted.
@@ -86,12 +87,12 @@ extern "C" fn open_callback<T: BaseDriverObject<U>, U: BaseObject>(
) -> core::ffi::c_int {
// SAFETY: `open_callback` is only ever called with a valid pointer to a `struct drm_file`.
let file = unsafe {
- drm::File::<<<U as IntoGEMObject>::Driver as drm::Driver>::File>::as_ref(raw_file)
+ drm::File::<<<U as IntoGEMObject>::Driver as drm::Driver>::File>::from_raw(raw_file)
};
// SAFETY: `open_callback` is specified in the AllocOps structure for `Object<T>`, ensuring that
// `raw_obj` is indeed contained within a `Object<T>`.
let obj = unsafe {
- <<<U as IntoGEMObject>::Driver as drm::Driver>::Object as IntoGEMObject>::as_ref(raw_obj)
+ <<<U as IntoGEMObject>::Driver as drm::Driver>::Object as IntoGEMObject>::from_raw(raw_obj)
};
match T::open(obj, file) {
@@ -106,12 +107,12 @@ extern "C" fn close_callback<T: BaseDriverObject<U>, U: BaseObject>(
) {
// SAFETY: `open_callback` is only ever called with a valid pointer to a `struct drm_file`.
let file = unsafe {
- drm::File::<<<U as IntoGEMObject>::Driver as drm::Driver>::File>::as_ref(raw_file)
+ drm::File::<<<U as IntoGEMObject>::Driver as drm::Driver>::File>::from_raw(raw_file)
};
// SAFETY: `close_callback` is specified in the AllocOps structure for `Object<T>`, ensuring
// that `raw_obj` is indeed contained within a `Object<T>`.
let obj = unsafe {
- <<<U as IntoGEMObject>::Driver as drm::Driver>::Object as IntoGEMObject>::as_ref(raw_obj)
+ <<<U as IntoGEMObject>::Driver as drm::Driver>::Object as IntoGEMObject>::from_raw(raw_obj)
};
T::close(obj, file);
@@ -124,10 +125,10 @@ impl<T: DriverObject> IntoGEMObject for Object<T> {
self.obj.get()
}
- unsafe fn as_ref<'a>(self_ptr: *mut bindings::drm_gem_object) -> &'a Self {
+ unsafe fn from_raw<'a>(self_ptr: *mut bindings::drm_gem_object) -> &'a Self {
// SAFETY: `obj` is guaranteed to be in an `Object<T>` via the safety contract of this
// function
- unsafe { &*crate::container_of!(self_ptr, Object<T>, obj) }
+ unsafe { &*crate::container_of!(Opaque::cast_from(self_ptr), Object<T>, obj) }
}
}
@@ -168,9 +169,9 @@ pub trait BaseObject: IntoGEMObject {
// - A `drm::Driver` can only have a single `File` implementation.
// - `file` uses the same `drm::Driver` as `Self`.
// - Therefore, we're guaranteed that `ptr` must be a gem object embedded within `Self`.
- // - And we check if the pointer is null befoe calling as_ref(), ensuring that `ptr` is a
+ // - And we check if the pointer is null befoe calling from_raw(), ensuring that `ptr` is a
// valid pointer to an initialized `Self`.
- let obj = unsafe { Self::as_ref(ptr) };
+ let obj = unsafe { Self::from_raw(ptr) };
// SAFETY:
// - We take ownership of the reference of `drm_gem_object_lookup()`.
@@ -269,8 +270,10 @@ impl<T: DriverObject> Object<T> {
}
extern "C" fn free_callback(obj: *mut bindings::drm_gem_object) {
+ let ptr: *mut Opaque<bindings::drm_gem_object> = obj.cast();
+
// SAFETY: All of our objects are of type `Object<T>`.
- let this = unsafe { crate::container_of!(obj, Self, obj) }.cast_mut();
+ let this = unsafe { crate::container_of!(ptr, Self, obj) };
// SAFETY: The C code only ever calls this callback with a valid pointer to a `struct
// drm_gem_object`.