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From: kernel test robot <lkp@intel.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
	linux-arm-kernel@lists.infradead.org, arm@kernel.org
Subject: [soc:board-remove 137/200] drivers/mfd/max8925-i2c.c:175:28: warning: variable 'tsc_irq' is uninitialized when used here
Date: Wed, 19 Aug 2026 14:09:26 +0800	[thread overview]
Message-ID: <202608191428.rYgVrQ4k-lkp@intel.com> (raw)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git board-remove
head:   c12d647b0229f4d75a2973c9b4e79f9b53406426
commit: cdd7cbf79d6c020c83a34985cae63f91f8f8a4c9 [137/200] mfd: max8925: remove platform data probing
config: i386-randconfig-016-20260819 (https://download.01.org/0day-ci/archive/20260819/202608191428.rYgVrQ4k-lkp@intel.com/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260819/202608191428.rYgVrQ4k-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/202608191428.rYgVrQ4k-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/mfd/max8925-i2c.c:175:28: warning: variable 'tsc_irq' is uninitialized when used here [-Wuninitialized]
     175 |         max8925_device_init(chip, tsc_irq);
         |                                   ^~~~~~~
   drivers/mfd/max8925-i2c.c:138:13: note: initialize the variable 'tsc_irq' to silence this warning
     138 |         int tsc_irq;
         |                    ^
         |                     = 0
   1 warning generated.


vim +/tsc_irq +175 drivers/mfd/max8925-i2c.c

   133	
   134	static int max8925_probe(struct i2c_client *client)
   135	{
   136		struct max8925_chip *chip;
   137		struct device_node *node = client->dev.of_node;
   138		int tsc_irq;
   139		int ret;
   140	
   141		chip = devm_kzalloc(&client->dev,
   142				    sizeof(struct max8925_chip), GFP_KERNEL);
   143		if (chip == NULL)
   144			return -ENOMEM;
   145	
   146		/* parse DT to get platform data */
   147		ret = of_property_read_u32(node, "maxim,tsc-irq", &chip->tsc_irq);
   148		if (ret) {
   149			dev_err(&client->dev, "Not found maxim,tsc-irq property\n");
   150			return -EINVAL;
   151		}
   152	
   153		chip->i2c = client;
   154		chip->dev = &client->dev;
   155		i2c_set_clientdata(client, chip);
   156		mutex_init(&chip->io_lock);
   157	
   158		chip->rtc = i2c_new_dummy_device(chip->i2c->adapter, RTC_I2C_ADDR);
   159		if (IS_ERR(chip->rtc)) {
   160			dev_err(chip->dev, "Failed to allocate I2C device for RTC\n");
   161			return PTR_ERR(chip->rtc);
   162		}
   163		i2c_set_clientdata(chip->rtc, chip);
   164	
   165		chip->adc = i2c_new_dummy_device(chip->i2c->adapter, ADC_I2C_ADDR);
   166		if (IS_ERR(chip->adc)) {
   167			dev_err(chip->dev, "Failed to allocate I2C device for ADC\n");
   168			i2c_unregister_device(chip->rtc);
   169			return PTR_ERR(chip->adc);
   170		}
   171		i2c_set_clientdata(chip->adc, chip);
   172	
   173		device_init_wakeup(&client->dev, 1);
   174	
 > 175		max8925_device_init(chip, tsc_irq);
   176	
   177		return 0;
   178	}
   179	

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


                 reply	other threads:[~2026-08-19  6:10 UTC|newest]

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