Hi Jiansheng, kernel test robot noticed the following build warnings: [auto build test WARNING on lee-mfd/for-mfd-next] [also build test WARNING on robh/for-next lee-leds/for-leds-next lee-mfd/for-mfd-fixes linus/master v6.5-rc7 next-20230822] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Jiansheng-Wu/dt-bindings-spi-Convert-sprd-spi-bindings-to-yaml/20230822-155400 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next patch link: https://lore.kernel.org/r/20230822075113.25506-3-jiansheng.wu%40unisoc.com patch subject: [PATCH 2/2] mfd: sprd-sc27xx-spi: Add PMICs support for UMS9621 SoC config: i386-buildonly-randconfig-004-20230822 (https://download.01.org/0day-ci/archive/20230823/202308230247.XxIH8PLy-lkp@xxxxxxxxx/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230823/202308230247.XxIH8PLy-lkp@xxxxxxxxx/reproduce) 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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202308230247.XxIH8PLy-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/mfd/sprd-sc27xx-spi.c: In function 'sprd_pmic_spi_write': >> drivers/mfd/sprd-sc27xx-spi.c:133:12: warning: 'pdata' is used uninitialized in this function [-Wuninitialized] 133 | if (!pdata->slave_id) { | ~~~~~^~~~~~~~~~ vim +/pdata +133 drivers/mfd/sprd-sc27xx-spi.c 124 125 static int sprd_pmic_spi_write(void *context, const void *data, size_t count) 126 { 127 struct device *dev = context; 128 struct spi_device *spi = to_spi_device(dev); 129 const struct sprd_pmic_data *pdata; 130 int ret; 131 u32 *pmdata; 132 > 133 if (!pdata->slave_id) { 134 ret = spi_write(spi, data, count); 135 } else { 136 pdata = ((struct sprd_pmic *)spi_get_drvdata(spi))->pdata; 137 138 pmdata = kzalloc(count, GFP_KERNEL); 139 if (!pmdata) 140 return -ENOMEM; 141 memcpy(pmdata, data, count); 142 *pmdata += pdata->slave_id; 143 ret = spi_write(spi, (const void *)pmdata, count); 144 kfree(pmdata); 145 } 146 if (ret) 147 pr_err("pmic mfd write failed!\n"); 148 149 return ret; 150 } 151 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
