Hi Sergei,
On Wed, 12 Jul 2006 15:42:14 +0400
Sergei Organov <[EMAIL PROTECTED]> wrote:
| Suppose I have a usb-serial device managed, say, by the airprime
| driver. When I connect it, it is attached to the /dev/ttyUSB0, then,
| every disconnect/connect results in detaching from /dev/ttyUSB0 and
| attaching back to /dev/ttyUSB0 *unless* there is an application that
| keeps an opened fd got from open("/dev/ttyUSB0") while
| disconnect/connect happens, in which case the device is attached to
| /dev/ttyUSB1.
|
| It's OK that the application keeping the fd open can do nothing sensible
| with it after corresponding device has been disconnected (and connected
| back), but can the /dev/ttyUSB0 itself be freed for allocation at
| disconnect time? Is there something fundamental that prevents it or
| makes it undesirable?
It seems to me that the current implementation is the easier way
to do it.
Note that we don't only freed the port-related memory, we have also
to unregister the tty interface.
--
Luiz Fernando N. Capitulino
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