linux-kernel - Re: [PATCH v1 2/2] iio: adc: ti-ads1119: Add driver

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Date: Wed, 29 May 2024 17:36:19 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: oe-kbuild@...ts.linux.dev, Francesco Dolcini <francesco@...cini.it>,
	Jonathan Cameron <jic23@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	João Paulo Gonçalves <jpaulo.silvagoncalves@...il.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>
Cc: lkp@...el.com, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org
Subject: Re: [PATCH v1 2/2] iio: adc: ti-ads1119: Add driver

Hi Francesco,

kernel test robot noticed the following build warnings:

https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Francesco-Dolcini/dt-bindings-iio-adc-add-ti-ads1119/20240527-234431
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link:    https://lore.kernel.org/r/20240527154050.24975-3-francesco%40dolcini.it
patch subject: [PATCH v1 2/2] iio: adc: ti-ads1119: Add driver
config: openrisc-randconfig-r071-20240529 (https://download.01.org/0day-ci/archive/20240529/202405291150.r5z8TZYu-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 13.2.0

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>
| Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
| Closes: https://lore.kernel.org/r/202405291150.r5z8TZYu-lkp@intel.com/

New smatch warnings:
drivers/iio/adc/ti-ads1119.c:653 ads1119_get_configs() warn: passing zero to 'PTR_ERR'

vim +629 drivers/iio/adc/ti-ads1119.c

14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  642  static int ads1119_get_configs(struct ads1119_state *st)
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  643  {
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  644  	struct device *dev = &st->client->dev;
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  645  
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  646  	st->vref = devm_regulator_get_optional(dev, "vref");
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  647  	if (IS_ERR(st->vref))
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  648  		return dev_err_probe(dev, PTR_ERR(st->vref),
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  649  				     "Failed to get vref\n");
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  650  
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  651  	st->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  652  	if (IS_ERR(st->reset_gpio))
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27 @653  		return dev_err_probe(dev, PTR_ERR(st->vref),
                                                                                                  ^^^^^^^^
st->reset_gpio was intended.

14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  654  				     "Failed to get reset gpio\n");
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  655  
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  656  	return ads1119_alloc_and_config_channels(st);
14caaeae0e22b3 João Paulo Gonçalves 2024-05-27  657  }

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