[PATCH v2 1/9] rust: seq_file: add as_raw() method

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

Add a method to obtain a raw pointer to the underlying struct
seq_file, needed for FFI calls into C (e.g. drm_debugfs_gpuva_info).

Signed-off-by: Alvin Sun <alvin.sun@linux.dev>
---
 rust/kernel/seq_file.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/rust/kernel/seq_file.rs b/rust/kernel/seq_file.rs
index 518265558d66f..fbc75e0e77634 100644
--- a/rust/kernel/seq_file.rs
+++ b/rust/kernel/seq_file.rs
@@ -29,6 +29,12 @@ pub unsafe fn from_raw<'a>(ptr: *mut bindings::seq_file) -> &'a SeqFile {
         unsafe { &*ptr.cast() }
     }
 
+    /// Returns a raw pointer to the underlying `struct seq_file`.
+    #[inline]
+    pub fn as_raw(&self) -> *mut bindings::seq_file {
+        self.inner.get()
+    }
+
     /// Used by the [`seq_print`] macro.
     #[inline]
     pub fn call_printf(&self, args: fmt::Arguments<'_>) {

-- 
2.43.0