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Date: Wed, 12 Jun 2024 12:13:11 +0800
From: kernel test robot <lkp@intel.com>
To: Andy Shevchenko <andy.shevchenko@gmail.com>,
	Jacky Huang <ychuang3@nuvoton.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Tomer Maimon <tmaimon77@gmail.com>,
	linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org,
	linux-kernel@vger.kernel.org, openbmc@lists.ozlabs.org
Cc: oe-kbuild-all@lists.linux.dev, Shan-Chun Hung <schung@nuvoton.com>,
	Avi Fishman <avifishman70@gmail.com>,
	Tali Perry <tali.perry1@gmail.com>,
	Patrick Venture <venture@google.com>, Nancy Yuen <yuenn@google.com>,
	Benjamin Fair <benjaminfair@google.com>,
	Jonathan =?iso-8859-1?Q?Neusch=E4fer?= <j.neuschaefer@gmx.net>
Subject: Re: [PATCH v1 4/4] pinctrl: nuvoton: Reduce use of OF-specific APIs
Message-ID: <202406121152.f2DLL871-lkp@intel.com>
References: <20240611093127.90210-5-andy.shevchenko@gmail.com>
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In-Reply-To: <20240611093127.90210-5-andy.shevchenko@gmail.com>

Hi Andy,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linusw-pinctrl/devel]
[also build test WARNING on linusw-pinctrl/for-next next-20240611]
[cannot apply to linus/master v6.10-rc3]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Andy-Shevchenko/pinctrl-nuvoton-Convert-to-use-struct-pingroup-and-PINCTRL_PINGROUP/20240611-173545
base:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git devel
patch link:    https://lore.kernel.org/r/20240611093127.90210-5-andy.shevchenko%40gmail.com
patch subject: [PATCH v1 4/4] pinctrl: nuvoton: Reduce use of OF-specific APIs
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20240612/202406121152.f2DLL871-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240612/202406121152.f2DLL871-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/202406121152.f2DLL871-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c: In function 'npcm7xx_gpio_of':
>> drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c:1833:25: warning: unused variable 'res' [-Wunused-variable]
    1833 |         struct resource res;
         |                         ^~~


vim +/res +1833 drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c

3b588e43ee5c7a Tomer Maimon        2018-08-08  1829  
3b588e43ee5c7a Tomer Maimon        2018-08-08  1830  static int npcm7xx_gpio_of(struct npcm7xx_pinctrl *pctrl)
3b588e43ee5c7a Tomer Maimon        2018-08-08  1831  {
3b588e43ee5c7a Tomer Maimon        2018-08-08  1832  	int ret = -ENXIO;
3b588e43ee5c7a Tomer Maimon        2018-08-08 @1833  	struct resource res;
0173ce55e50800 Andy Shevchenko     2022-04-01  1834  	struct device *dev = pctrl->dev;
0173ce55e50800 Andy Shevchenko     2022-04-01  1835  	struct fwnode_reference_args args;
0173ce55e50800 Andy Shevchenko     2022-04-01  1836  	struct fwnode_handle *child;
0173ce55e50800 Andy Shevchenko     2022-04-01  1837  	int id = 0;
0173ce55e50800 Andy Shevchenko     2022-04-01  1838  
0173ce55e50800 Andy Shevchenko     2022-04-01  1839  	for_each_gpiochip_node(dev, child) {
7123707f39ae24 Andy Shevchenko     2024-06-11  1840  		pctrl->gpio_bank[id].base = fwnode_iomap(child, 0);
ad64639417161e Jiasheng Jiang      2023-06-07  1841  		if (!pctrl->gpio_bank[id].base)
ad64639417161e Jiasheng Jiang      2023-06-07  1842  			return -EINVAL;
3b588e43ee5c7a Tomer Maimon        2018-08-08  1843  
0173ce55e50800 Andy Shevchenko     2022-04-01  1844  		ret = bgpio_init(&pctrl->gpio_bank[id].gc, dev, 4,
0173ce55e50800 Andy Shevchenko     2022-04-01  1845  				 pctrl->gpio_bank[id].base + NPCM7XX_GP_N_DIN,
0173ce55e50800 Andy Shevchenko     2022-04-01  1846  				 pctrl->gpio_bank[id].base + NPCM7XX_GP_N_DOUT,
3b588e43ee5c7a Tomer Maimon        2018-08-08  1847  				 NULL,
3b588e43ee5c7a Tomer Maimon        2018-08-08  1848  				 NULL,
0173ce55e50800 Andy Shevchenko     2022-04-01  1849  				 pctrl->gpio_bank[id].base + NPCM7XX_GP_N_IEM,
3b588e43ee5c7a Tomer Maimon        2018-08-08  1850  				 BGPIOF_READ_OUTPUT_REG_SET);
3b588e43ee5c7a Tomer Maimon        2018-08-08  1851  		if (ret) {
0173ce55e50800 Andy Shevchenko     2022-04-01  1852  			dev_err(dev, "bgpio_init() failed\n");
3b588e43ee5c7a Tomer Maimon        2018-08-08  1853  			return ret;
3b588e43ee5c7a Tomer Maimon        2018-08-08  1854  		}
3b588e43ee5c7a Tomer Maimon        2018-08-08  1855  
0173ce55e50800 Andy Shevchenko     2022-04-01  1856  		ret = fwnode_property_get_reference_args(child, "gpio-ranges", NULL, 3, 0, &args);
3b588e43ee5c7a Tomer Maimon        2018-08-08  1857  		if (ret < 0) {
0173ce55e50800 Andy Shevchenko     2022-04-01  1858  			dev_err(dev, "gpio-ranges fail for GPIO bank %u\n", id);
3b588e43ee5c7a Tomer Maimon        2018-08-08  1859  			return ret;
3b588e43ee5c7a Tomer Maimon        2018-08-08  1860  		}
3b588e43ee5c7a Tomer Maimon        2018-08-08  1861  
7123707f39ae24 Andy Shevchenko     2024-06-11  1862  		ret = fwnode_irq_get(child, 0);
e804944dcc7799 Krzysztof Kozlowski 2022-04-23  1863  		if (!ret) {
0173ce55e50800 Andy Shevchenko     2022-04-01  1864  			dev_err(dev, "No IRQ for GPIO bank %u\n", id);
e804944dcc7799 Krzysztof Kozlowski 2022-04-23  1865  			return -EINVAL;
0173ce55e50800 Andy Shevchenko     2022-04-01  1866  		}
0173ce55e50800 Andy Shevchenko     2022-04-01  1867  		pctrl->gpio_bank[id].irq = ret;
0173ce55e50800 Andy Shevchenko     2022-04-01  1868  		pctrl->gpio_bank[id].irqbase = id * NPCM7XX_GPIO_PER_BANK;
0173ce55e50800 Andy Shevchenko     2022-04-01  1869  		pctrl->gpio_bank[id].pinctrl_id = args.args[0];
0173ce55e50800 Andy Shevchenko     2022-04-01  1870  		pctrl->gpio_bank[id].gc.base = args.args[1];
0173ce55e50800 Andy Shevchenko     2022-04-01  1871  		pctrl->gpio_bank[id].gc.ngpio = args.args[2];
3b588e43ee5c7a Tomer Maimon        2018-08-08  1872  		pctrl->gpio_bank[id].gc.owner = THIS_MODULE;
0173ce55e50800 Andy Shevchenko     2022-04-01  1873  		pctrl->gpio_bank[id].gc.parent = dev;
0173ce55e50800 Andy Shevchenko     2022-04-01  1874  		pctrl->gpio_bank[id].gc.fwnode = child;
0173ce55e50800 Andy Shevchenko     2022-04-01  1875  		pctrl->gpio_bank[id].gc.label = devm_kasprintf(dev, GFP_KERNEL, "%pfw", child);
4be1eaf322f07b Nicholas Mc Guire   2018-11-23  1876  		if (pctrl->gpio_bank[id].gc.label == NULL)
4be1eaf322f07b Nicholas Mc Guire   2018-11-23  1877  			return -ENOMEM;
4be1eaf322f07b Nicholas Mc Guire   2018-11-23  1878  
3b588e43ee5c7a Tomer Maimon        2018-08-08  1879  		pctrl->gpio_bank[id].gc.dbg_show = npcmgpio_dbg_show;
0173ce55e50800 Andy Shevchenko     2022-04-01  1880  		pctrl->gpio_bank[id].direction_input = pctrl->gpio_bank[id].gc.direction_input;
0173ce55e50800 Andy Shevchenko     2022-04-01  1881  		pctrl->gpio_bank[id].gc.direction_input = npcmgpio_direction_input;
0173ce55e50800 Andy Shevchenko     2022-04-01  1882  		pctrl->gpio_bank[id].direction_output = pctrl->gpio_bank[id].gc.direction_output;
0173ce55e50800 Andy Shevchenko     2022-04-01  1883  		pctrl->gpio_bank[id].gc.direction_output = npcmgpio_direction_output;
0173ce55e50800 Andy Shevchenko     2022-04-01  1884  		pctrl->gpio_bank[id].request = pctrl->gpio_bank[id].gc.request;
3b588e43ee5c7a Tomer Maimon        2018-08-08  1885  		pctrl->gpio_bank[id].gc.request = npcmgpio_gpio_request;
de38bdbe011b31 Bartosz Golaszewski 2023-10-13  1886  		pctrl->gpio_bank[id].gc.free = pinctrl_gpio_free;
3b588e43ee5c7a Tomer Maimon        2018-08-08  1887  		id++;
3b588e43ee5c7a Tomer Maimon        2018-08-08  1888  	}
3b588e43ee5c7a Tomer Maimon        2018-08-08  1889  
3b588e43ee5c7a Tomer Maimon        2018-08-08  1890  	pctrl->bank_num = id;
3b588e43ee5c7a Tomer Maimon        2018-08-08  1891  	return ret;
3b588e43ee5c7a Tomer Maimon        2018-08-08  1892  }
3b588e43ee5c7a Tomer Maimon        2018-08-08  1893  

-- 
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https://github.com/intel/lkp-tests/wiki