Am Dienstag, 13. März 2007 14:39 schrieb Mark Lord:
> Oliver Neukum wrote:
> >
> > If we get to destroy_serial(), how can ports still be open?
>
> (1) open up a ckermit session on /dev/usb_serial_port_0.
> (2) suspend the machine (to RAM).
> (3) the suspend logic "removes" all USB devices.
No,
any open port has taken a reference in serial_open():
serial = usb_serial_get_by_index(tty->index);
destroy_serial() can be called only when the refcount goes to zero. How
can there be open ports?
Regards
Oliver
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