Hi Svyatoslav, kernel test robot noticed the following build warnings: [auto build test WARNING on tegra/for-next] [cannot apply to usb/usb-testing usb/usb-next usb/usb-linus staging/staging-testing staging/staging-next staging/staging-linus linus/master v6.17-rc4 next-20250905] [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/Svyatoslav-Ryhel/usb-phy-tegra-use-phy-type-directly/20250905-003521 base: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next patch link: https://lore.kernel.org/r/20250904163238.238105-2-clamor95%40gmail.com patch subject: [PATCH v1 1/2] usb: phy: tegra: use phy type directly config: i386-buildonly-randconfig-006-20250906 (https://download.01.org/0day-ci/archive/20250906/202509061310.SU5Tf105-lkp@xxxxxxxxx/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250906/202509061310.SU5Tf105-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/202509061310.SU5Tf105-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/usb/phy/phy-tegra-usb.c:874:2: warning: variable 'err' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized] 874 | default: | ^~~~~~~ drivers/usb/phy/phy-tegra-usb.c:878:6: note: uninitialized use occurs here 878 | if (err) | ^~~ include/linux/compiler.h:55:47: note: expanded from macro 'if' 55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ^~~~ include/linux/compiler.h:57:52: note: expanded from macro '__trace_if_var' 57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ drivers/usb/phy/phy-tegra-usb.c:860:9: note: initialize the variable 'err' to silence this warning 860 | int err; | ^ | = 0 drivers/usb/phy/phy-tegra-usb.c:905:2: warning: variable 'err' is used uninitialized whenever switch default is taken [-Wsometimes-uninitialized] 905 | default: | ^~~~~~~ drivers/usb/phy/phy-tegra-usb.c:909:6: note: uninitialized use occurs here 909 | if (err) | ^~~ include/linux/compiler.h:55:47: note: expanded from macro 'if' 55 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ^~~~ include/linux/compiler.h:57:52: note: expanded from macro '__trace_if_var' 57 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ drivers/usb/phy/phy-tegra-usb.c:891:9: note: initialize the variable 'err' to silence this warning 891 | int err; | ^ | = 0 2 warnings generated. vim +/err +874 drivers/usb/phy/phy-tegra-usb.c 857 858 static int tegra_usb_phy_power_on(struct tegra_usb_phy *phy) 859 { 860 int err; 861 862 if (phy->powered_on) 863 return 0; 864 865 switch (phy->phy_type) { 866 case USBPHY_INTERFACE_MODE_UTMI: 867 err = utmi_phy_power_on(phy); 868 break; 869 870 case USBPHY_INTERFACE_MODE_ULPI: 871 err = ulpi_phy_power_on(phy); 872 break; 873 > 874 default: 875 break; 876 } 877 878 if (err) 879 return err; 880 881 phy->powered_on = true; 882 883 /* Let PHY settle down */ 884 usleep_range(2000, 2500); 885 886 return 0; 887 } 888 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
