Merge tag 'drm-misc-fixes-2025-08-21' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

A bunch of fixes for 6.17:
  - analogix_dp: devm_drm_bridge_alloc() error handling fix
  - gaudi: Memory deallocation fix
  - gpuvm: Documentation warning fix
  - hibmc: Various misc fixes
  - nouveau: Memory leak fixes, typos
  - panic: u64 division handling on 32 bits architecture fix
  - rockchip: Kconfig fix, register caching fix
  - rust: memory layout and safety fixes
  - tests: Endianness fixes

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <mripard@redhat.com>
Link: https://lore.kernel.org/r/20250821-economic-dandelion-rooster-c57fa9@houat

1 files changed, 11 insertions, 0 deletions

diff --git a/rust/kernel/alloc/allocator_test.rs b/rust/kernel/alloc/allocator_test.rs
index a3074480bd8d..90dd987d40e4 100644
--- a/rust/kernel/alloc/allocator_test.rs
+++ b/rust/kernel/alloc/allocator_test.rs
@@ -22,6 +22,17 @@ pub type Kmalloc = Cmalloc;
 pub type Vmalloc = Kmalloc;
 pub type KVmalloc = Kmalloc;
 
+impl Cmalloc {
+    /// Returns a [`Layout`] that makes [`Kmalloc`] fulfill the requested size and alignment of
+    /// `layout`.
+    pub fn aligned_layout(layout: Layout) -> Layout {
+        // Note that `layout.size()` (after padding) is guaranteed to be a multiple of
+        // `layout.align()` which together with the slab guarantees means that `Kmalloc` will return
+        // a properly aligned object (see comments in `kmalloc()` for more information).
+        layout.pad_to_align()
+    }
+}
+
 extern "C" {
     #[link_name = "aligned_alloc"]
     fn libc_aligned_alloc(align: usize, size: usize) -> *mut crate::ffi::c_void;