Re: [PATCH] usb: gadget: u_serial: Add null pointer checks after RX/TX submission

[Kuen-Han Tsai]

Hi Greg & Jiri,

>> Or you switch to tty_port refcounting and need not fiddling with this at all
>> ;).
> I agree, Kuen-Han, why not do that instead?

Thanks for the feedback! I agree that switching to tty_port
refcounting is the right approach.

I'm currently digging into tty_port.c to understand the best way to
implement this change. Could you confirm if I'm on the right track by
using tty_kref_get() and tty_kref_put() to address race conditions?
Additionally, do I need to refactor other functions in u_serial.c that
interact with the TTY without refcounting?

Regards,
Kuen-Han