Hi Rajmohan, [auto build test WARNING on ljones-mfd/for-mfd-next] [also build test WARNING on v4.12-rc4 next-20170606] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Rajmohan-Mani/mfd-Add-new-mfd-device-TPS68470/20170607-080306 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 6.2.0 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=ia64 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/mfd/tps68470.c: In function 'tps68470_probe': >> drivers/mfd/tps68470.c:175:3: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized] dev_err(tps->dev, "devm_regmap_init_i2c Error %d\n", ret); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/ret +175 drivers/mfd/tps68470.c 159 160 static int tps68470_probe(struct i2c_client *client) 161 { 162 struct tps68470 *tps; 163 int ret; 164 165 tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); 166 if (!tps) 167 return -ENOMEM; 168 169 mutex_init(&tps->lock); 170 i2c_set_clientdata(client, tps); 171 tps->dev = &client->dev; 172 173 tps->regmap = devm_regmap_init_i2c(client, &tps68470_regmap_config); 174 if (IS_ERR(tps->regmap)) { > 175 dev_err(tps->dev, "devm_regmap_init_i2c Error %d\n", ret); 176 return PTR_ERR(tps->regmap); 177 } 178 179 ret = mfd_add_devices(tps->dev, -1, tps68470s, 180 ARRAY_SIZE(tps68470s), NULL, 0, NULL); 181 if (ret < 0) { 182 dev_err(tps->dev, "mfd_add_devices failed: %d\n", ret); 183 return ret; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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