[chrome-os:chromeos-5.10 23780/24038] sound/pci/hda/hda_codec.c:900:2: warning: function 'snd_hda_codec_device_init' might be a candidate for 'gnu_printf' format attribute

[chrome-os:chromeos-5.10 23780/24038] sound/pci/hda/hda_codec.c:900:2: warning: function 'snd_hda_codec_device_init' might be a candidate for 'gnu_printf' format attribute

[kernel test robot]

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tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.10
head:   854998d0d92a6bd14eb0e423dc5eccb3cf77e31a
commit: 7707f6aaf45ae60bb48e4621f1ee2bd79a787a7e [23780/24038] CHROMIUM: ALSA: hda: Update and expose snd_hda_codec_device_init()
config: x86_64-buildonly-randconfig-r006-20211203 (https://download.01.org/0day-ci/archive/20211203/202112031322.6vHexO2c-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel
        git fetch --no-tags chrome-os chromeos-5.10
        git checkout 7707f6aaf45ae60bb48e4621f1ee2bd79a787a7e
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash sound/pci/hda/ tools/testing/nvdimm/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   sound/pci/hda/hda_codec.c: In function 'snd_hda_codec_device_init':
>> sound/pci/hda/hda_codec.c:900:2: warning: function 'snd_hda_codec_device_init' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
     900 |  vsprintf(name, fmt, vargs);
         |  ^~~~~~~~


vim +900 sound/pci/hda/hda_codec.c

   871	
   872	/**
   873	 * snd_hda_codec_device_init - allocate HDA codec device
   874	 * @bus: codec's parent bus
   875	 * @codec_addr: the codec address on the parent bus
   876	 * @codecp: the pointer to store the generated codec
   877	 * @fmt: format string for the device's name
   878	 *
   879	 * Returns newly allocated codec device or ERR_PTR() on failure.
   880	 */
   881	struct hda_codec *
   882	snd_hda_codec_device_init(struct hda_bus *bus, unsigned int codec_addr,
   883				  const char *fmt, ...)
   884	{
   885		va_list vargs;
   886		char name[DEV_NAME_LEN];
   887		struct hda_codec *codec;
   888		int err;
   889	
   890		if (snd_BUG_ON(!bus))
   891			return ERR_PTR(-EINVAL);
   892		if (snd_BUG_ON(codec_addr > HDA_MAX_CODEC_ADDRESS))
   893			return ERR_PTR(-EINVAL);
   894	
   895		codec = kzalloc(sizeof(*codec), GFP_KERNEL);
   896		if (!codec)
   897			return ERR_PTR(-ENOMEM);
   898	
   899		va_start(vargs, fmt);
 > 900		vsprintf(name, fmt, vargs);
   901		va_end(vargs);
   902	
   903		err = snd_hdac_device_init(&codec->core, &bus->core, name, codec_addr);
   904		if (err < 0) {
   905			kfree(codec);
   906			return ERR_PTR(err);
   907		}
   908	
   909		codec->bus = bus;
   910		codec->core.type = HDA_DEV_LEGACY;
   911	
   912		return codec;
   913	}
   914	EXPORT_SYMBOL_GPL(snd_hda_codec_device_init);
   915	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org