Re: [PATCH RFC 1/3] rust: snd: Add initial snd_card binding

[kernel test robot <lkp@intel.com>]

Hi Tristan,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on 2dee3d3adcadcc57d62ba6608cd02f50b0c10264]

url:    https://github.com/intel-lab-lkp/linux/commits/Tristan-de-Cacqueray/rust-snd-Add-initial-snd_card-binding/20261011-130217
base:   2dee3d3adcadcc57d62ba6608cd02f50b0c10264
patch link:    https://lore.kernel.org/r/20261011-rust-snd-v1-1-7974ecdcd345%40midirus.com
patch subject: [PATCH RFC 1/3] rust: snd: Add initial snd_card binding
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20261015/202610150312.jVRyBA9L-lkp@intel.com/config)
compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261015/202610150312.jVRyBA9L-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610150312.jVRyBA9L-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: snd_devm_card_new
   >>> referenced by snd.rs:29 (rust/kernel/snd.rs:29)
   >>>               vmlinux.o:(<kernel::snd::SoundCard>::new)
--
>> ld.lld: error: undefined symbol: snd_card_register
   >>> referenced by snd.rs:63 (rust/kernel/snd.rs:63)
   >>>               vmlinux.o:(<kernel::snd::SoundCard>::register)

--
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https://github.com/intel/lkp-tests/wiki