Hi Yizhen, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: c78205e40443cde6028b0539f30a00fda4167edd commit: c3af5be3e72710b357d9f23a5bdcafe8f96d6dfd [18659/30000] ub: uburma add cmd create jetty implementation. config: arm64-randconfig-003-20241029 (https://download.01.org/0day-ci/archive/20241101/202411010152.inffSTWn-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241101/202411010152.inffSTWn-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202411010152.inffSTWn-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/ub/urma/uburma/uburma_cmd.c:144:6: warning: no previous prototype for 'uburma_jfc_event_cb' [-Wmissing-prototypes] 144 | void uburma_jfc_event_cb(struct ubcore_event *event, struct ubcore_ucontext *ctx) | ^~~~~~~~~~~~~~~~~~~ drivers/ub/urma/uburma/uburma_cmd.c:156:6: warning: no previous prototype for 'uburma_jfs_event_cb' [-Wmissing-prototypes] 156 | void uburma_jfs_event_cb(struct ubcore_event *event, struct ubcore_ucontext *ctx) | ^~~~~~~~~~~~~~~~~~~ drivers/ub/urma/uburma/uburma_cmd.c:168:6: warning: no previous prototype for 'uburma_jfr_event_cb' [-Wmissing-prototypes] 168 | void uburma_jfr_event_cb(struct ubcore_event *event, struct ubcore_ucontext *ctx) | ^~~~~~~~~~~~~~~~~~~

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drivers/ub/urma/uburma/uburma_cmd.c:180:6: warning: no previous prototype for 'uburma_jetty_event_cb' [-Wmissing-prototypes] 180 | void uburma_jetty_event_cb(struct ubcore_event *event, struct ubcore_ucontext *ctx) | ^~~~~~~~~~~~~~~~~~~~~

vim +/uburma_jetty_event_cb +180 drivers/ub/urma/uburma/uburma_cmd.c 179

180 void uburma_jetty_event_cb(struct ubcore_event *event, struct ubcore_ucontext *ctx) 181 { 182 struct uburma_jetty_uobj *jetty_uobj; 183 184 if (event->element.jetty == NULL) 185 return; 186 187 jetty_uobj = (struct uburma_jetty_uobj *)event->element.jetty->jetty_cfg.jetty_context; 188 uburma_write_async_event(ctx, event->element.jetty->urma_jetty, event->event_type, 189 &jetty_uobj->async_event_list, &jetty_uobj->async_events_reported); 190 } 191

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