Messages in this thread | | | From | Oliver Neukum <> | Subject | Re: [PATCH] usb-serial regression fix | Date | Tue, 13 Mar 2007 14:50:23 +0100 |
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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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