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SubjectRe: [PATCH v3 1/2] nvmem: Add driver for OCOTP in Sunplus SP7021
Hi Vincent,

I love your patch! Perhaps something to improve:

[auto build test WARNING on robh/for-next]
[also build test WARNING on linux/master linus/master v5.16-rc5 next-20211214]
[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/Vincent-Shih/Add-driver-for-OCOTP-in-Sunplus-SP7021/20211215-193707
base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: mips-allyesconfig (https://download.01.org/0day-ci/archive/20211216/202112160925.yTjMLuBB-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 11.2.0
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/c0a3142f164bb92fe79eafeb333050e7fcf42560
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Vincent-Shih/Add-driver-for-OCOTP-in-Sunplus-SP7021/20211215-193707
git checkout c0a3142f164bb92fe79eafeb333050e7fcf42560
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash drivers/nvmem/

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

All warnings (new ones prefixed by >>):

drivers/nvmem/sunplus-ocotp.c: In function 'sp_ocotp_probe':
>> drivers/nvmem/sunplus-ocotp.c:158:37: warning: variable 'otp_data' set but not used [-Wunused-but-set-variable]
158 | const struct sp_ocotp_data *otp_data;
| ^~~~~~~~


vim +/otp_data +158 drivers/nvmem/sunplus-ocotp.c

154
155 static int sp_ocotp_probe(struct platform_device *pdev)
156 {
157 const struct of_device_id *match;
> 158 const struct sp_ocotp_data *otp_data;
159 struct device *dev = &pdev->dev;
160 struct nvmem_device *nvmem;
161 struct sp_ocotp_priv *otp;
162 struct resource *res;
163 int ret;
164
165 match = of_match_device(dev->driver->of_match_table, dev);
166 if (match && match->data)
167 otp_data = match->data;
168
169 otp = devm_kzalloc(dev, sizeof(*otp), GFP_KERNEL);
170 if (!otp)
171 return -ENOMEM;
172
173 otp->dev = dev;
174
175 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hb_gpio");
176 otp->base[HB_GPIO] = devm_ioremap_resource(dev, res);
177 if (IS_ERR(otp->base[HB_GPIO]))
178 return PTR_ERR(otp->base[HB_GPIO]);
179
180 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otprx");
181 otp->base[OTPRX] = devm_ioremap_resource(dev, res);
182 if (IS_ERR(otp->base[OTPRX]))
183 return PTR_ERR(otp->base[OTPRX]);
184
185 otp->clk = devm_clk_get(&pdev->dev, NULL);
186 if (IS_ERR(otp->clk))
187 return dev_err_probe(&pdev->dev, PTR_ERR(otp->clk),
188 "devm_clk_get fail\n");
189
190 ret = clk_prepare(otp->clk);
191 if (ret < 0) {
192 dev_err(dev, "failed to prepare clk: %d\n", ret);
193 return ret;
194 }
195
196 sp_ocotp_nvmem_config.priv = otp;
197 sp_ocotp_nvmem_config.dev = dev;
198
199 nvmem = devm_nvmem_register(dev, &sp_ocotp_nvmem_config);
200 if (IS_ERR(nvmem))
201 return dev_err_probe(&pdev->dev, PTR_ERR(nvmem),
202 "register nvmem device fail\n");
203
204 platform_set_drvdata(pdev, nvmem);
205
206 dev_dbg(dev, "banks:%d x wpb:%d x wsize:%d = %d",
207 QAC628_OTP_NUM_BANKS, OTP_WORDS_PER_BANK,
208 OTP_WORD_SIZE, QAC628_OTP_SIZE);
209
210 dev_info(dev, "by Sunplus (C) 2020");
211
212 return 0;
213 }
214

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

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