10 Jul
2020
10 Jul
'20
12:41 p.m.
On Fri, Jul 10, 2020 at 10:46:19AM +0000, Joakim Tjernlund wrote:
On Fri, 2020-07-10 at 12:34 +0200, Greg KH wrote:
On Fri, Jul 10, 2020 at 11:35:18AM +0200, Joakim Tjernlund wrote:
tty_set_operations(acm_tty_driver, &acm_ops);
retval = tty_register_driver(acm_tty_driver);
retval = usb_register(&acm_driver);if (retval) { put_tty_driver(acm_tty_driver); return retval; }
retval = usb_register(&acm_driver);
retval = tty_register_driver(acm_tty_driver);if (retval) {
tty_unregister_driver(acm_tty_driver);
usb_deregister(&acm_driver);Why are you switching these around? I think I know, but you don't really say...
I wrote: For initial termios to reach USB core, USB driver has to be registered before TTY driver. Found out that by trial and error. Isn't that clear enough?
No, that makes no sense at all since USB core does not care about init_termios.
Johan