linux-kernel - Re: [PATCH v2 1/3] fpga: Add Efinix Trion & Titanium serial SPI programming driver

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Date: Tue, 2 Jul 2024 23:27:12 +0200
From: Dan Carpenter <dan.carpenter@...aro.org>
To: oe-kbuild@...ts.linux.dev, iansdannapel@...il.com,
	Moritz Fischer <mdf@...nel.org>, Wu Hao <hao.wu@...el.com>,
	Xu Yilun <yilun.xu@...el.com>, Tom Rix <trix@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko.stuebner@...rry.de>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Sebastian Reichel <sre@...nel.org>,
	Chris Morgan <macromorgan@...mail.com>,
	Michael Riesch <michael.riesch@...fvision.net>,
	Rafał Miłecki <rafal@...ecki.pl>,
	Andre Przywara <andre.przywara@....com>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-fpga@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: lkp@...el.com, oe-kbuild-all@...ts.linux.dev,
	Ian Dannapel <iansdannapel@...il.com>
Subject: Re: [PATCH v2 1/3] fpga: Add Efinix Trion & Titanium serial SPI
 programming driver

Hi,

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/iansdannapel-gmail-com/fpga-Add-Efinix-Trion-Titanium-serial-SPI-programming-driver/20240630-044745
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20240628152348.61133-2-iansdannapel%40gmail.com
patch subject: [PATCH v2 1/3] fpga: Add Efinix Trion & Titanium serial SPI programming driver
config: powerpc-randconfig-r081-20240701 (https://download.01.org/0day-ci/archive/20240703/202407030525.VHF3He6K-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)

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/202407030525.VHF3He6K-lkp@intel.com/

smatch warnings:
drivers/fpga/efinix-trion-spi-passive.c:174 efinix_spi_probe() warn: passing zero to 'PTR_ERR'

vim +/PTR_ERR +174 drivers/fpga/efinix-trion-spi-passive.c

4c272ecc14b70f Ian Dannapel 2024-06-28  152  static int efinix_spi_probe(struct spi_device *spi)
4c272ecc14b70f Ian Dannapel 2024-06-28  153  {
4c272ecc14b70f Ian Dannapel 2024-06-28  154  	struct efinix_spi_conf *conf;
4c272ecc14b70f Ian Dannapel 2024-06-28  155  	struct fpga_manager *mgr;
4c272ecc14b70f Ian Dannapel 2024-06-28  156  
4c272ecc14b70f Ian Dannapel 2024-06-28  157  	conf = devm_kzalloc(&spi->dev, sizeof(*conf), GFP_KERNEL);
4c272ecc14b70f Ian Dannapel 2024-06-28  158  	if (!conf)
4c272ecc14b70f Ian Dannapel 2024-06-28  159  		return -ENOMEM;
4c272ecc14b70f Ian Dannapel 2024-06-28  160  
4c272ecc14b70f Ian Dannapel 2024-06-28  161  	conf->spi = spi;
4c272ecc14b70f Ian Dannapel 2024-06-28  162  
4c272ecc14b70f Ian Dannapel 2024-06-28  163  	conf->creset = devm_gpiod_get(&spi->dev, "creset", GPIOD_OUT_HIGH);
4c272ecc14b70f Ian Dannapel 2024-06-28  164  	if (IS_ERR(conf->creset))
4c272ecc14b70f Ian Dannapel 2024-06-28  165  		return dev_err_probe(&spi->dev, PTR_ERR(conf->creset),
4c272ecc14b70f Ian Dannapel 2024-06-28  166  				"Failed to get RESET gpio\n");
4c272ecc14b70f Ian Dannapel 2024-06-28  167  
4c272ecc14b70f Ian Dannapel 2024-06-28  168  	conf->cs = devm_gpiod_get(&spi->dev, "cs", GPIOD_OUT_HIGH);
4c272ecc14b70f Ian Dannapel 2024-06-28  169  	if (IS_ERR(conf->cs))
4c272ecc14b70f Ian Dannapel 2024-06-28  170  		return dev_err_probe(&spi->dev, PTR_ERR(conf->cs),
4c272ecc14b70f Ian Dannapel 2024-06-28  171  				"Failed to get CHIP_SELECT gpio\n");
4c272ecc14b70f Ian Dannapel 2024-06-28  172  
4c272ecc14b70f Ian Dannapel 2024-06-28  173  	if (!(spi->mode & SPI_CPHA) || !(spi->mode & SPI_CPOL))
4c272ecc14b70f Ian Dannapel 2024-06-28 @174  		return dev_err_probe(&spi->dev, PTR_ERR(conf->cs),

s/conf->cs/-EINVAL/

4c272ecc14b70f Ian Dannapel 2024-06-28  175  				"Unsupported SPI mode, set CPHA and CPOL\n");
4c272ecc14b70f Ian Dannapel 2024-06-28  176  
4c272ecc14b70f Ian Dannapel 2024-06-28  177  	conf->cdone = devm_gpiod_get_optional(&spi->dev, "cdone", GPIOD_IN);
4c272ecc14b70f Ian Dannapel 2024-06-28  178  	if (IS_ERR(conf->cdone))
4c272ecc14b70f Ian Dannapel 2024-06-28  179  		return dev_err_probe(&spi->dev, PTR_ERR(conf->cdone),
4c272ecc14b70f Ian Dannapel 2024-06-28  180  				"Failed to get CDONE gpio\n");
4c272ecc14b70f Ian Dannapel 2024-06-28  181  
4c272ecc14b70f Ian Dannapel 2024-06-28  182  	mgr = devm_fpga_mgr_register(&spi->dev,
4c272ecc14b70f Ian Dannapel 2024-06-28  183  				"Efinix SPI Passive Programming FPGA Manager",
4c272ecc14b70f Ian Dannapel 2024-06-28  184  					&efinix_spi_ops, conf);
4c272ecc14b70f Ian Dannapel 2024-06-28  185  
4c272ecc14b70f Ian Dannapel 2024-06-28  186  	return PTR_ERR_OR_ZERO(mgr);
4c272ecc14b70f Ian Dannapel 2024-06-28  187  }

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