Hi, * Andy Shevchenko <andriy.shevchenko@xxxxxxxxx> [230310 13:46]: > On Fri, Mar 10, 2023 at 08:52:38AM +0200, Tony Lindgren wrote: > > * kernel test robot <lkp@xxxxxxxxx> [230309 21:31]: > > > >> drivers/tty/serial/serial_ctrl.c:17:34: warning: 'serial_ctrl_pm' defined but not used [-Wunused-const-variable=] > > > 17 | static DEFINE_RUNTIME_DEV_PM_OPS(serial_ctrl_pm, NULL, NULL, NULL); > > > | ^~~~~~~~~~~~~~ > > > > Thanks I'll tag it with __maybe_unused. > > It requires to use pm_ptr() macro, it was designed exactly to *not* spread > __maybe_unused. Heh yeah.. Turns out the issue here is that the serial_ctrl_pm ops is not used at all for serial_ctrl.c and can be just dropped. Regards, Tony