[PATCH v3 4/6] rust: drm: set fops.owner from driver module pointer

[Alvin Sun <alvin.sun@linux.dev>]

Change `create_fops()` to accept an owner module pointer instead of
hardcoding `null_mut()`, ensuring the kernel correctly tracks the
module owning the DRM device's file operations.

Signed-off-by: Alvin Sun <alvin.sun@linux.dev>
---
 rust/kernel/drm/device.rs  | 3 ++-
 rust/kernel/drm/gem/mod.rs | 4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/rust/kernel/drm/device.rs b/rust/kernel/drm/device.rs
index 403fc35353c74..221667d843c41 100644
--- a/rust/kernel/drm/device.rs
+++ b/rust/kernel/drm/device.rs
@@ -111,7 +111,8 @@ impl<T: drm::Driver> Device<T> {
         fops: &Self::GEM_FOPS,
     };
 
-    const GEM_FOPS: bindings::file_operations = drm::gem::create_fops();
+    const GEM_FOPS: bindings::file_operations =
+        drm::gem::create_fops(crate::this_module::<T::OwnerModule>().as_ptr());
 
     /// Create a new `drm::Device` for a `drm::Driver`.
     pub fn new(dev: &device::Device, data: impl PinInit<T::Data, Error>) -> Result<ARef<Self>> {
diff --git a/rust/kernel/drm/gem/mod.rs b/rust/kernel/drm/gem/mod.rs
index 01b5bd47a3332..9a203efc59116 100644
--- a/rust/kernel/drm/gem/mod.rs
+++ b/rust/kernel/drm/gem/mod.rs
@@ -357,10 +357,10 @@ impl<T: DriverObject> AllocImpl for Object<T> {
     };
 }
 
-pub(super) const fn create_fops() -> bindings::file_operations {
+pub(super) const fn create_fops(owner: *mut bindings::module) -> bindings::file_operations {
     let mut fops: bindings::file_operations = pin_init::zeroed();
 
-    fops.owner = core::ptr::null_mut();
+    fops.owner = owner;
     fops.open = Some(bindings::drm_open);
     fops.release = Some(bindings::drm_release);
     fops.unlocked_ioctl = Some(bindings::drm_ioctl);

-- 
2.43.0