On Fri, Nov 06, 2020 at 04:07:33AM +0800, kernel test robot wrote: > Hi Wei, > > I love your patch! Perhaps something to improve: > > [auto build test WARNING on tip/x86/core] > [also build test WARNING on asm-generic/master iommu/next tip/timers/core pci/next linus/master v5.10-rc2 next-20201105] > [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/Wei-Liu/Introducing-Linux-root-partition-support-for-Microsoft-Hypervisor/20201106-010058 > base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 238c91115cd05c71447ea071624a4c9fe661f970 > config: i386-randconfig-r002-20201104 (attached as .config) > compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 > reproduce (this is a W=1 build): > # https://github.com/0day-ci/linux/commit/83c03b4e30e729a77688b8c0ffeffa2a555dcce7 > git remote add linux-review https://github.com/0day-ci/linux > git fetch --no-tags linux-review Wei-Liu/Introducing-Linux-root-partition-support-for-Microsoft-Hypervisor/20201106-010058 > git checkout 83c03b4e30e729a77688b8c0ffeffa2a555dcce7 > # save the attached .config to linux build tree > make W=1 ARCH=i386 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All warnings (new ones prefixed by >>): > > >> arch/x86/hyperv/hv_init.c:341:13: warning: no previous prototype for 'hv_get_partition_id' [-Wmissing-prototypes] > 341 | void __init hv_get_partition_id(void) > | ^~~~~~~~~~~~~~~~~~~ This function can be made static since the only user is in the same file. Wei.