Hi Krishna, kernel test robot noticed the following build warnings: [auto build test WARNING on pci/next] [also build test WARNING on pci/for-linus linus/master v6.5-rc6 next-20230816] [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/Krishna-chaitanya-chundru/PCI-qcom-Add-sysfs-entry-to-change-link-speed-dynamically/20230817-103734 base: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next patch link: https://lore.kernel.org/r/1692239684-12697-1-git-send-email-quic_krichai%40quicinc.com patch subject: [PATCH v1] PCI: qcom: Add sysfs entry to change link speed dynamically config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20230817/202308171155.o5viLJ3O-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230817/202308171155.o5viLJ3O-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/202308171155.o5viLJ3O-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/pci/controller/dwc/pcie-qcom.c:249:13: warning: 'qcom_pcie_opp_update' used but never defined 249 | static void qcom_pcie_opp_update(struct qcom_pcie *pcie); | ^~~~~~~~~~~~~~~~~~~~ vim +/qcom_pcie_opp_update +249 drivers/pci/controller/dwc/pcie-qcom.c 247 248 static void qcom_pcie_icc_update(struct qcom_pcie *pcie); > 249 static void qcom_pcie_opp_update(struct qcom_pcie *pcie); 250 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki