Hi JC, I love your patch! Perhaps something to improve: [auto build test WARNING on tegra/for-next] [also build test WARNING on robh/for-next usb/usb-testing char-misc/char-misc-testing staging/staging-testing driver-core/driver-core-testing v5.9-rc2 next-20200827] [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/JC-Kuo/Tegra-XHCI-controller-ELPG-support/20200828-091337 base: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next config: arm-multi_v7_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/soc/tegra/pmc.c:2537:5: warning: no previous prototype for 'tegra_pmc_regmap_readl' [-Wmissing-prototypes] 2537 | int tegra_pmc_regmap_readl(void *context, unsigned int reg, unsigned int *val) | ^~~~~~~~~~~~~~~~~~~~~~ >> drivers/soc/tegra/pmc.c:2545:5: warning: no previous prototype for 'tegra_pmc_regmap_writel' [-Wmissing-prototypes] 2545 | int tegra_pmc_regmap_writel(void *context, unsigned int reg, unsigned int val) | ^~~~~~~~~~~~~~~~~~~~~~~ # https://github.com/0day-ci/linux/commit/56def0140d21d6eeb92615ae6ec5f7e25095c37f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review JC-Kuo/Tegra-XHCI-controller-ELPG-support/20200828-091337 git checkout 56def0140d21d6eeb92615ae6ec5f7e25095c37f vim +/tegra_pmc_regmap_readl +2537 drivers/soc/tegra/pmc.c 2536 > 2537 int tegra_pmc_regmap_readl(void *context, unsigned int reg, unsigned int *val) 2538 { 2539 struct tegra_pmc *pmc = context; 2540 2541 *val = tegra_pmc_readl(pmc, reg); 2542 return 0; 2543 } 2544 > 2545 int tegra_pmc_regmap_writel(void *context, unsigned int reg, unsigned int val) 2546 { 2547 struct tegra_pmc *pmc = context; 2548 2549 tegra_pmc_writel(pmc, val, reg); 2550 return 0; 2551 } 2552 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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