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Date: Thu, 25 Apr 2024 08:31:26 +0300
From: Dan Carpenter <dan.carpenter@linaro.org>
To: oe-kbuild@lists.linux.dev, Aren Moynihan <aren@peacevolution.org>,
	Jonathan Cameron <jic23@kernel.org>,
	Lars-Peter Clausen <lars@metafoo.de>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Samuel Holland <samuel@sholland.org>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>
Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev,
	Aren Moynihan <aren@peacevolution.org>,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	Ondrej Jirman <megi@xff.cz>,
	Uwe =?iso-8859-1?Q?Kleine-K=F6nig?= <u.kleine-koenig@pengutronix.de>,
	linux-iio@vger.kernel.org, phone-devel@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev,
	Willow Barraco <contact@willowbarraco.fr>
Subject: Re: [PATCH v2 2/6] iio: light: stk3310: Implement vdd supply and
 power it off during suspend
Message-ID: <b47ad9a6-2b17-497f-ac2d-33ffec1b2750@moroto.mountain>
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In-Reply-To: <20240423223309.1468198-4-aren@peacevolution.org>

Hi Aren,

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/Aren-Moynihan/dt-bindings-iio-light-stk33xx-add-vdd-and-leda-regulators/20240424-064250
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link:    https://lore.kernel.org/r/20240423223309.1468198-4-aren%40peacevolution.org
patch subject: [PATCH v2 2/6] iio: light: stk3310: Implement vdd supply and power it off during suspend
config: i386-randconfig-141-20240424 (https://download.01.org/0day-ci/archive/20240425/202404251021.4OPER3OS-lkp@intel.com/config)
compiler: gcc-10 (Ubuntu 10.5.0-1ubuntu1) 10.5.0

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@intel.com>
| Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
| Closes: https://lore.kernel.org/r/202404251021.4OPER3OS-lkp@intel.com/

smatch warnings:
drivers/iio/light/stk3310.c:615 stk3310_probe() error: uninitialized symbol 'ret'.

vim +/ret +615 drivers/iio/light/stk3310.c

9046d80dce04c6 Uwe Kleine-K?nig 2022-11-18  592  static int stk3310_probe(struct i2c_client *client)
be9e6229d67696 Tiberiu Breana   2015-04-27  593  {
be9e6229d67696 Tiberiu Breana   2015-04-27  594  	int ret;
be9e6229d67696 Tiberiu Breana   2015-04-27  595  	struct iio_dev *indio_dev;
be9e6229d67696 Tiberiu Breana   2015-04-27  596  	struct stk3310_data *data;
be9e6229d67696 Tiberiu Breana   2015-04-27  597  
be9e6229d67696 Tiberiu Breana   2015-04-27  598  	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
be9e6229d67696 Tiberiu Breana   2015-04-27  599  	if (!indio_dev) {
be9e6229d67696 Tiberiu Breana   2015-04-27  600  		dev_err(&client->dev, "iio allocation failed!\n");
be9e6229d67696 Tiberiu Breana   2015-04-27  601  		return -ENOMEM;
be9e6229d67696 Tiberiu Breana   2015-04-27  602  	}
be9e6229d67696 Tiberiu Breana   2015-04-27  603  
be9e6229d67696 Tiberiu Breana   2015-04-27  604  	data = iio_priv(indio_dev);
be9e6229d67696 Tiberiu Breana   2015-04-27  605  	data->client = client;
be9e6229d67696 Tiberiu Breana   2015-04-27  606  	i2c_set_clientdata(client, indio_dev);
d6ecb01583d4e0 Arnaud Ferraris  2022-04-20  607  
d6ecb01583d4e0 Arnaud Ferraris  2022-04-20  608  	device_property_read_u32(&client->dev, "proximity-near-level",
d6ecb01583d4e0 Arnaud Ferraris  2022-04-20  609  				 &data->ps_near_level);
d6ecb01583d4e0 Arnaud Ferraris  2022-04-20  610  
be9e6229d67696 Tiberiu Breana   2015-04-27  611  	mutex_init(&data->lock);
be9e6229d67696 Tiberiu Breana   2015-04-27  612  
dd231c1d219f6b Ondrej Jirman    2024-04-23  613  	data->vdd_reg = devm_regulator_get(&client->dev, "vdd");
dd231c1d219f6b Ondrej Jirman    2024-04-23  614  	if (IS_ERR(data->vdd_reg))
dd231c1d219f6b Ondrej Jirman    2024-04-23 @615  		return dev_err_probe(&client->dev, ret, "get regulator vdd failed\n");

s/ret/PTR_ERR(data->vdd_reg)/

dd231c1d219f6b Ondrej Jirman    2024-04-23  616  
be9e6229d67696 Tiberiu Breana   2015-04-27  617  	ret = stk3310_regmap_init(data);
be9e6229d67696 Tiberiu Breana   2015-04-27  618  	if (ret < 0)
be9e6229d67696 Tiberiu Breana   2015-04-27  619  		return ret;
be9e6229d67696 Tiberiu Breana   2015-04-27  620  
be9e6229d67696 Tiberiu Breana   2015-04-27  621  	indio_dev->info = &stk3310_info;
be9e6229d67696 Tiberiu Breana   2015-04-27  622  	indio_dev->name = STK3310_DRIVER_NAME;
be9e6229d67696 Tiberiu Breana   2015-04-27  623  	indio_dev->modes = INDIO_DIRECT_MODE;
be9e6229d67696 Tiberiu Breana   2015-04-27  624  	indio_dev->channels = stk3310_channels;
be9e6229d67696 Tiberiu Breana   2015-04-27  625  	indio_dev->num_channels = ARRAY_SIZE(stk3310_channels);
be9e6229d67696 Tiberiu Breana   2015-04-27  626  
dd231c1d219f6b Ondrej Jirman    2024-04-23  627  	ret = regulator_enable(data->vdd_reg);
dd231c1d219f6b Ondrej Jirman    2024-04-23  628  	if (ret)
dd231c1d219f6b Ondrej Jirman    2024-04-23  629  		return dev_err_probe(&client->dev, ret,
dd231c1d219f6b Ondrej Jirman    2024-04-23  630  				     "regulator vdd enable failed\n");
dd231c1d219f6b Ondrej Jirman    2024-04-23  631  
dd231c1d219f6b Ondrej Jirman    2024-04-23  632  	/* we need a short delay to allow the chip time to power on */
dd231c1d219f6b Ondrej Jirman    2024-04-23  633  	fsleep(1000);
dd231c1d219f6b Ondrej Jirman    2024-04-23  634  
be9e6229d67696 Tiberiu Breana   2015-04-27  635  	ret = stk3310_init(indio_dev);
be9e6229d67696 Tiberiu Breana   2015-04-27  636  	if (ret < 0)
dd231c1d219f6b Ondrej Jirman    2024-04-23  637  		goto err_vdd_disable;
be9e6229d67696 Tiberiu Breana   2015-04-27  638  
6839c1b0700a79 Octavian Purdila 2015-09-23  639  	if (client->irq > 0) {
3dd477acbdd1f1 Tiberiu Breana   2015-04-27  640  		ret = devm_request_threaded_irq(&client->dev, client->irq,
3dd477acbdd1f1 Tiberiu Breana   2015-04-27  641  						stk3310_irq_handler,
3dd477acbdd1f1 Tiberiu Breana   2015-04-27  642  						stk3310_irq_event_handler,
3dd477acbdd1f1 Tiberiu Breana   2015-04-27  643  						IRQF_TRIGGER_FALLING |
3dd477acbdd1f1 Tiberiu Breana   2015-04-27  644  						IRQF_ONESHOT,
3dd477acbdd1f1 Tiberiu Breana   2015-04-27  645  						STK3310_EVENT, indio_dev);
7c7a9eeaa335df Hartmut Knaack   2015-07-09  646  		if (ret < 0) {
3dd477acbdd1f1 Tiberiu Breana   2015-04-27  647  			dev_err(&client->dev, "request irq %d failed\n",
3dd477acbdd1f1 Tiberiu Breana   2015-04-27  648  				client->irq);
7c7a9eeaa335df Hartmut Knaack   2015-07-09  649  			goto err_standby;
7c7a9eeaa335df Hartmut Knaack   2015-07-09  650  		}
3dd477acbdd1f1 Tiberiu Breana   2015-04-27  651  	}
3dd477acbdd1f1 Tiberiu Breana   2015-04-27  652  
037e966f2d6389 Hartmut Knaack   2015-07-09  653  	ret = iio_device_register(indio_dev);
037e966f2d6389 Hartmut Knaack   2015-07-09  654  	if (ret < 0) {
037e966f2d6389 Hartmut Knaack   2015-07-09  655  		dev_err(&client->dev, "device_register failed\n");
7c7a9eeaa335df Hartmut Knaack   2015-07-09  656  		goto err_standby;
037e966f2d6389 Hartmut Knaack   2015-07-09  657  	}
037e966f2d6389 Hartmut Knaack   2015-07-09  658  
7c7a9eeaa335df Hartmut Knaack   2015-07-09  659  	return 0;
7c7a9eeaa335df Hartmut Knaack   2015-07-09  660  
7c7a9eeaa335df Hartmut Knaack   2015-07-09  661  err_standby:
7c7a9eeaa335df Hartmut Knaack   2015-07-09  662  	stk3310_set_state(data, STK3310_STATE_STANDBY);
dd231c1d219f6b Ondrej Jirman    2024-04-23  663  err_vdd_disable:
dd231c1d219f6b Ondrej Jirman    2024-04-23  664  	regulator_disable(data->vdd_reg);
be9e6229d67696 Tiberiu Breana   2015-04-27  665  	return ret;
be9e6229d67696 Tiberiu Breana   2015-04-27  666  }

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