Hi, kernel test robot noticed the following build warnings: [auto build test WARNING on usb/usb-testing] [also build test WARNING on usb/usb-next usb/usb-linus westeri-thunderbolt/next linus/master v6.9 next-20240520] [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/andrey-konovalov-linux-dev/kcov-usb-disable-interrupts-in-kcov_remote_start_usb_softirq/20240521-050030 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing patch link: https://lore.kernel.org/r/20240520205856.162910-1-andrey.konovalov%40linux.dev patch subject: [PATCH] kcov, usb: disable interrupts in kcov_remote_start_usb_softirq config: openrisc-allnoconfig (https://download.01.org/0day-ci/archive/20240521/202405210908.bv3U0RAQ-lkp@xxxxxxxxx/config) compiler: or1k-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240521/202405210908.bv3U0RAQ-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/202405210908.bv3U0RAQ-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from kernel/fork.c:92: include/linux/kcov.h: In function 'kcov_remote_start_usb_softirq': >> include/linux/kcov.h:132:1: warning: no return statement in function returning non-void [-Wreturn-type] 132 | static inline unsigned long kcov_remote_start_usb_softirq(u64 id) {} | ^~~~~~ vim +132 include/linux/kcov.h 119 120 static inline void kcov_task_init(struct task_struct *t) {} 121 static inline void kcov_task_exit(struct task_struct *t) {} 122 static inline void kcov_prepare_switch(struct task_struct *t) {} 123 static inline void kcov_finish_switch(struct task_struct *t) {} 124 static inline void kcov_remote_start(u64 handle) {} 125 static inline void kcov_remote_stop(void) {} 126 static inline u64 kcov_common_handle(void) 127 { 128 return 0; 129 } 130 static inline void kcov_remote_start_common(u64 id) {} 131 static inline void kcov_remote_start_usb(u64 id) {} > 132 static inline unsigned long kcov_remote_start_usb_softirq(u64 id) {} 133 static inline void kcov_remote_stop_softirq(unsigned long flags) {} 134 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
