Hi Amelie, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on robh/for-next] [also build test WARNING on v4.16] [cannot apply to next-20180411] [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/Amelie-Delaunay/Introduce-STMFX-I2C-GPIO-expander/20180412-082837 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: sparc64-allyesconfig (attached as .config) compiler: sparc64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/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=sparc64 All warnings (new ones prefixed by >>): drivers/pinctrl/pinctrl-stmfx.c: In function 'stmfx_resume': >> drivers/pinctrl/pinctrl-stmfx.c:949:3: warning: ignoring return value of 'regulator_enable', declared with attribute warn_unused_result [-Wunused-result] regulator_enable(stmfx->vdd); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/regulator_enable +949 drivers/pinctrl/pinctrl-stmfx.c 943 944 static int stmfx_resume(struct device *dev) 945 { 946 struct stmfx *stmfx = dev_get_drvdata(dev); 947 948 if (!IS_ERR(stmfx->vdd)) > 949 regulator_enable(stmfx->vdd); 950 951 /* Restore IRQ_OUT_PIN register */ 952 stmfx_irq_init(stmfx); 953 954 /* Restore SYS_CTRL register */ 955 stmfx_gpio_function_enable(stmfx, stmfx->pctl->gpio_chip.ngpio); 956 957 /* Restore all GPIO expander function relative registers */ 958 stmfx_gpio_restore_regs(stmfx->pctl); 959 960 return 0; 961 } 962 #endif 963 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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