On Wed, May 06, 2020 at 03:23:12PM +0800, Claire Chang wrote: > serial_match_port() uses devt to match devices. However, when serdev > registers a tty port, devt has never been set. This makes > device_find_child() always return NULL. > > Assign devt in serdev_tty_port_register() to fix this. > > Signed-off-by: Claire Chang <tientzu@xxxxxxxxxxxx> > --- > drivers/tty/serdev/serdev-ttyport.c | 2 ++ > 1 file changed, 2 insertions(+) So is existing code broken because of this? Or does no one ever call device_find_child() on this? Who needs/uses this? thanks, greg k-h