linux-kernel - Re: [PATCH 2/3] syscon: add support for "syscon-smc" compatible

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Message-ID: <202107241438.ZGxGgokJ-lkp@intel.com>
Date:   Sat, 24 Jul 2021 15:00:19 +0800
From:   kernel test robot <lkp@...el.com>
To:     Clément Léger <clement.leger@...tlin.com>,
        Lee Jones <lee.jones@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Arnd Bergmann <arnd@...db.de>
Cc:     kbuild-all@...ts.01.org,
        Clément Léger <clement.leger@...tlin.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Peng Fan <peng.fan@....com>
Subject: Re: [PATCH 2/3] syscon: add support for "syscon-smc" compatible

Hi "Clément,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on regmap/for-next]
[also build test WARNING on robh/for-next v5.14-rc2 next-20210723]
[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]

url:    https://github.com/0day-ci/linux/commits/Cl-ment-L-ger/add-SMC-based-regmap-driver-for-secure-syscon-access/20210723-215708
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git for-next
config: riscv-nommu_k210_defconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 10.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/5b8123662c54263f6fc86b6ef9e296739fe78353
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Cl-ment-L-ger/add-SMC-based-regmap-driver-for-secure-syscon-access/20210723-215708
        git checkout 5b8123662c54263f6fc86b6ef9e296739fe78353
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   drivers/mfd/syscon.c: In function 'syscon_probe':
>> drivers/mfd/syscon.c:407:23: warning: variable 'syscon_config' set but not used [-Wunused-but-set-variable]
     407 |  struct regmap_config syscon_config = syscon_regmap_config;
         |                       ^~~~~~~~~~~~~


vim +/syscon_config +407 drivers/mfd/syscon.c

   401	
   402	static int syscon_probe(struct platform_device *pdev)
   403	{
   404		int ret;
   405		struct device *dev = &pdev->dev;
   406		struct syscon_platform_data *pdata = dev_get_platdata(dev);
 > 407		struct regmap_config syscon_config = syscon_regmap_config;
   408		struct syscon *syscon;
   409		const struct syscon_driver_data *driver_data;
   410	
   411		if (pdata)
   412			syscon_config.name = pdata->label;
   413	
   414		syscon = devm_kzalloc(dev, sizeof(*syscon), GFP_KERNEL);
   415		if (!syscon)
   416			return -ENOMEM;
   417	
   418		driver_data = (const struct syscon_driver_data *)
   419					platform_get_device_id(pdev)->driver_data;
   420	
   421		ret = driver_data->probe_func(pdev, dev, syscon);
   422		if (ret)
   423			return ret;
   424	
   425		platform_set_drvdata(pdev, syscon);
   426	
   427		return 0;
   428	}
   429	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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