rust: debugfs: use "kernel vertical" style for imports

Convert all imports in the debugfs Rust module to use "kernel vertical"
style.

With this subsequent patches neither introduce unrelated changes nor
leave an inconsistent import pattern.

While at it, drop unnecessary imports covered by prelude::*.

Link: https://docs.kernel.org/rust/coding-guidelines.html#imports
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20251218165626.450264-1-dakr@kernel.org
[ Apply the same change to the debugfs sample code. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

7 files changed, 147 insertions, 55 deletions

diff --git a/rust/kernel/debugfs.rs b/rust/kernel/debugfs.rs
index facad81e8290..536a320334bf 100644
--- a/rust/kernel/debugfs.rs
+++ b/rust/kernel/debugfs.rs
@@ -8,28 +8,52 @@
 // When DebugFS is disabled, many parameters are dead. Linting for this isn't helpful.
 #![cfg_attr(not(CONFIG_DEBUG_FS), allow(unused_variables))]
 
-use crate::fmt;
-use crate::prelude::*;
-use crate::str::CStr;
 #[cfg(CONFIG_DEBUG_FS)]
 use crate::sync::Arc;
-use crate::uaccess::UserSliceReader;
-use core::marker::PhantomData;
-use core::marker::PhantomPinned;
+use crate::{
+    fmt,
+    prelude::*,
+    str::CStr,
+    uaccess::UserSliceReader, //
+};
+
 #[cfg(CONFIG_DEBUG_FS)]
 use core::mem::ManuallyDrop;
-use core::ops::Deref;
+use core::{
+    marker::{
+        PhantomData,
+        PhantomPinned, //
+    },
+    ops::Deref,
+};
 
 mod traits;
-pub use traits::{BinaryReader, BinaryReaderMut, BinaryWriter, Reader, Writer};
+pub use traits::{
+    BinaryReader,
+    BinaryReaderMut,
+    BinaryWriter,
+    Reader,
+    Writer, //
+};
 
 mod callback_adapters;
-use callback_adapters::{FormatAdapter, NoWriter, WritableAdapter};
+use callback_adapters::{
+    FormatAdapter,
+    NoWriter,
+    WritableAdapter, //
+};
+
 mod file_ops;
 use file_ops::{
-    BinaryReadFile, BinaryReadWriteFile, BinaryWriteFile, FileOps, ReadFile, ReadWriteFile,
-    WriteFile,
+    BinaryReadFile,
+    BinaryReadWriteFile,
+    BinaryWriteFile,
+    FileOps,
+    ReadFile,
+    ReadWriteFile,
+    WriteFile, //
 };
+
 #[cfg(CONFIG_DEBUG_FS)]
 mod entry;
 #[cfg(CONFIG_DEBUG_FS)]
diff --git a/rust/kernel/debugfs/callback_adapters.rs b/rust/kernel/debugfs/callback_adapters.rs
index a260d8dee051..dee7d021e18c 100644
--- a/rust/kernel/debugfs/callback_adapters.rs
+++ b/rust/kernel/debugfs/callback_adapters.rs
@@ -4,12 +4,21 @@
 //! Adapters which allow the user to supply a write or read implementation as a value rather
 //! than a trait implementation. If provided, it will override the trait implementation.
 
-use super::{Reader, Writer};
-use crate::fmt;
-use crate::prelude::*;
-use crate::uaccess::UserSliceReader;
-use core::marker::PhantomData;
-use core::ops::Deref;
+use super::{
+    Reader,
+    Writer, //
+};
+
+use crate::{
+    fmt,
+    prelude::*,
+    uaccess::UserSliceReader, //
+};
+
+use core::{
+    marker::PhantomData,
+    ops::Deref, //
+};
 
 /// # Safety
 ///
diff --git a/rust/kernel/debugfs/entry.rs b/rust/kernel/debugfs/entry.rs
index 706cb7f73d6c..5ed1303f2fe6 100644
--- a/rust/kernel/debugfs/entry.rs
+++ b/rust/kernel/debugfs/entry.rs
@@ -1,10 +1,16 @@
 // SPDX-License-Identifier: GPL-2.0
 // Copyright (C) 2025 Google LLC.
 
-use crate::debugfs::file_ops::FileOps;
-use crate::ffi::c_void;
-use crate::str::{CStr, CStrExt as _};
-use crate::sync::Arc;
+use crate::{
+    debugfs::file_ops::FileOps,
+    prelude::*,
+    str::{
+        CStr,
+        CStrExt as _, //
+    },
+    sync::Arc,
+};
+
 use core::marker::PhantomData;
 
 /// Owning handle to a DebugFS entry.
diff --git a/rust/kernel/debugfs/file_ops.rs b/rust/kernel/debugfs/file_ops.rs
index 8a0442d6dd7a..ad19360540ba 100644
--- a/rust/kernel/debugfs/file_ops.rs
+++ b/rust/kernel/debugfs/file_ops.rs
@@ -1,14 +1,23 @@
 // SPDX-License-Identifier: GPL-2.0
 // Copyright (C) 2025 Google LLC.
 
-use super::{BinaryReader, BinaryWriter, Reader, Writer};
-use crate::debugfs::callback_adapters::Adapter;
-use crate::fmt;
-use crate::fs::file;
-use crate::prelude::*;
-use crate::seq_file::SeqFile;
-use crate::seq_print;
-use crate::uaccess::UserSlice;
+use super::{
+    BinaryReader,
+    BinaryWriter,
+    Reader,
+    Writer, //
+};
+
+use crate::{
+    debugfs::callback_adapters::Adapter,
+    fmt,
+    fs::file,
+    prelude::*,
+    seq_file::SeqFile,
+    seq_print,
+    uaccess::UserSlice, //
+};
+
 use core::marker::PhantomData;
 
 #[cfg(CONFIG_DEBUG_FS)]
diff --git a/rust/kernel/debugfs/traits.rs b/rust/kernel/debugfs/traits.rs
index 3eee60463fd5..8c39524b6a99 100644
--- a/rust/kernel/debugfs/traits.rs
+++ b/rust/kernel/debugfs/traits.rs
@@ -3,17 +3,38 @@
 
 //! Traits for rendering or updating values exported to DebugFS.
 
-use crate::alloc::Allocator;
-use crate::fmt;
-use crate::fs::file;
-use crate::prelude::*;
-use crate::sync::atomic::{Atomic, AtomicBasicOps, AtomicType, Relaxed};
-use crate::sync::Arc;
-use crate::sync::Mutex;
-use crate::transmute::{AsBytes, FromBytes};
-use crate::uaccess::{UserSliceReader, UserSliceWriter};
-use core::ops::{Deref, DerefMut};
-use core::str::FromStr;
+use crate::{
+    alloc::Allocator,
+    fmt,
+    fs::file,
+    prelude::*,
+    sync::{
+        atomic::{
+            Atomic,
+            AtomicBasicOps,
+            AtomicType,
+            Relaxed, //
+        },
+        Arc,
+        Mutex, //
+    },
+    transmute::{
+        AsBytes,
+        FromBytes, //
+    },
+    uaccess::{
+        UserSliceReader,
+        UserSliceWriter, //
+    },
+};
+
+use core::{
+    ops::{
+        Deref,
+        DerefMut, //
+    },
+    str::FromStr,
+};
 
 /// A trait for types that can be written into a string.
 ///
diff --git a/samples/rust/rust_debugfs.rs b/samples/rust/rust_debugfs.rs
index 8d190952984f..3d6ad697e2b7 100644
--- a/samples/rust/rust_debugfs.rs
+++ b/samples/rust/rust_debugfs.rs
@@ -32,15 +32,29 @@
 //! ```
 
 use core::str::FromStr;
-use kernel::c_str;
-use kernel::debugfs::{Dir, File};
-use kernel::new_mutex;
-use kernel::prelude::*;
-use kernel::sizes::*;
-use kernel::sync::aref::ARef;
-use kernel::sync::atomic::{Atomic, Relaxed};
-use kernel::sync::Mutex;
-use kernel::{acpi, device::Core, of, platform, str::CString};
+use kernel::{
+    acpi,
+    c_str,
+    debugfs::{
+        Dir,
+        File, //
+    },
+    device::Core,
+    new_mutex,
+    of,
+    platform,
+    prelude::*,
+    sizes::*,
+    str::CString,
+    sync::{
+        aref::ARef,
+        atomic::{
+            Atomic,
+            Relaxed, //
+        },
+        Mutex,
+    }, //
+};
 
 kernel::module_platform_driver! {
     type: RustDebugFs,
diff --git a/samples/rust/rust_debugfs_scoped.rs b/samples/rust/rust_debugfs_scoped.rs
index 702a6546d3fb..cb5d3dfdc599 100644
--- a/samples/rust/rust_debugfs_scoped.rs
+++ b/samples/rust/rust_debugfs_scoped.rs
@@ -6,12 +6,21 @@
 //! `Scope::dir` to create a variety of files without the need to separately
 //! track them all.
 
-use kernel::debugfs::{Dir, Scope};
-use kernel::prelude::*;
-use kernel::sizes::*;
-use kernel::sync::atomic::Atomic;
-use kernel::sync::Mutex;
-use kernel::{c_str, new_mutex, str::CString};
+use kernel::{
+    c_str,
+    debugfs::{
+        Dir,
+        Scope, //
+    },
+    new_mutex,
+    prelude::*,
+    sizes::*,
+    str::CString,
+    sync::{
+        atomic::Atomic,
+        Mutex, //
+    },
+};
 
 module! {
     type: RustScopedDebugFs,