[morimoto:sound-cleanup-2026-07-22 300/300] sound/soc/meson/meson-card-utils.c:314:41: warning: variable 'card_driver' is uninitialized when used here

tree:   https://github.com/morimoto/linux sound-cleanup-2026-07-22
head:   992d9ac1367e6b746cfabe31cf72ef690769afc8
commit: 8384b5464d5fc3809a6548bda73e1690bc5dea3a [300/300] ASoC: meson: meson-card-utils: use snd_soc_card_register()
config: arm-randconfig-004-20260722 (https://download.01.org/0day-ci/archive/20260723/[email protected]/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 5c0dfced1adc55429e32b1db08570abd3a219d85)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260723/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

>> sound/soc/meson/meson-card-utils.c:314:41: warning: variable 'card_driver' is uninitialized when used here [-Wuninitialized]
     314 |         ret = devm_snd_soc_card_register(card, card_driver);
         |                                                ^~~~~~~~~~~
   sound/soc/meson/meson-card-utils.c:266:41: note: initialize the variable 'card_driver' to silence this warning
     266 |         struct snd_soc_card_driver *card_driver;
         |                                                ^
         |                                                 = NULL
   1 warning generated.


vim +/card_driver +314 sound/soc/meson/meson-card-utils.c

   260	
   261	int meson_card_probe(struct platform_device *pdev)
   262	{
   263		const struct meson_card_match_data *data;
   264		struct device *dev = &pdev->dev;
   265		struct snd_soc_card *card;
   266		struct snd_soc_card_driver *card_driver;
   267		struct meson_card *priv;
   268		int ret;
   269	
   270		data = of_device_get_match_data(dev);
   271		if (!data) {
   272			dev_err(dev, "failed to match device\n");
   273			return -ENODEV;
   274		}
   275	
   276		card = snd_soc_card_alloc(dev);
   277		priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
   278		if (!card || !priv)
   279			return -ENOMEM;
   280	
   281		snd_soc_card_set_priv(card, priv);
   282	
   283		priv->card_driver.owner = THIS_MODULE;
   284		priv->card_driver.driver_name = dev->driver->name;
   285		priv->match_data = data;
   286		priv->dev = dev;
   287	
   288		ret = snd_soc_of_parse_card_name(card, "model");
   289		if (ret < 0)
   290			return ret;
   291	
   292		ret = meson_card_parse_of_optional(priv, "audio-routing",
   293					snd_soc_card_driver_of_parse_audio_routing);
   294		if (ret) {
   295			dev_err(dev, "error while parsing routing\n");
   296			return ret;
   297		}
   298	
   299		ret = meson_card_parse_of_optional(priv, "audio-widgets",
   300					snd_soc_card_driver_of_parse_simple_widgets);
   301		if (ret) {
   302			dev_err(dev, "error while parsing widgets\n");
   303			return ret;
   304		}
   305	
   306		ret = meson_card_add_links(priv);
   307		if (ret)
   308			goto out_err;
   309	
   310		ret = snd_soc_card_driver_of_parse_aux_devs(dev, &priv->card_driver, "audio-aux-devs");
   311		if (ret)
   312			goto out_err;
   313	
 > 314		ret = devm_snd_soc_card_register(card, card_driver);
   315		if (ret)
   316			goto out_err;
   317	
   318		return 0;
   319	
   320	out_err:
   321		meson_card_clean_references(priv);
   322		return ret;
   323	}
   324	EXPORT_SYMBOL_GPL(meson_card_probe);
   325	

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