On Thu, May 02, 2024 at 11:45:44AM +0100, Måns Rullgård wrote: > Johan Hovold <johan@xxxxxxxxxx> writes: > > > On Thu, May 02, 2024 at 11:07:28AM +0100, Mans Rullgard wrote: > >> Use tty_port_register_device_serdev() so that usb-serial devices > >> can be used as serdev controllers. > > > > I'm afraid it's not that easy. The reason serdev is not enabled for > > usb-serial is that there's currently no support for handling hotplug in > > serdev. The device can go away from under you at any time and then you'd > > crash the kernel. > > Oh, that's unfortunate. Regular serial ports can go away too, though, > and that seems to be handled fine. What am I missing? How is it handled? Normal serial ports can go away but in practice, it's a rare occurance, and usually people use serdev for devices where the ports can not be removed (i.e. internal connections). thanks, greg k-h
