Re: [PATCH 1/3] serdev: ttyport: add devt for tty port

[Greg KH]

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