linux-kernel - Re: [PATCH v2 6/8] rust: samples: usb: remove redundant `.as_ref()` for `dev

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Message-ID: <202601241311.4vcnMzFr-lkp@intel.com>
Date: Sat, 24 Jan 2026 13:36:07 +0800
From: kernel test robot <lkp@...el.com>
To: Gary Guo <gary@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Danilo Krummrich <dakr@...nel.org>, Miguel Ojeda <ojeda@...nel.org>,
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 6/8] rust: samples: usb: remove redundant `.as_ref()`
 for `dev_*` print

Hi Gary,

kernel test robot noticed the following build warnings:

[auto build test WARNING on a0c666c25aeefd16f4b088c6549a6fb6b65a8a1d]

url:    https://github.com/intel-lab-lkp/linux/commits/Gary-Guo/rust-pci-remove-redundant-as_ref-for-dev_-print/20260124-020452
base:   a0c666c25aeefd16f4b088c6549a6fb6b65a8a1d
patch link:    https://lore.kernel.org/r/20260123175854.176735-6-gary%40kernel.org
patch subject: [PATCH v2 6/8] rust: samples: usb: remove redundant `.as_ref()` for `dev_*` print
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20260124/202601241311.4vcnMzFr-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260124/202601241311.4vcnMzFr-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601241311.4vcnMzFr-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> warning: unused import: `self`
   --> samples/rust/rust_driver_usb.rs:8:9
   |
   8 |         self,
   |         ^^^^
   |
   = note: `#[warn(unused_imports)]` on by default

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki