thorpej 851be78801 Start the watchdog timer in stripopen(), and make sure it's cancelled in
stripclose().  In strip_watchdog(), make abort if the line has been closed.

This fixes kern/4470 (Wolfgang Rupprecht), which was a bad pointer passed
to b_to_q() from strip_proberadio() called via strip_watchdog(); the tty
hadn't yet been attached to the strip interface.
1997-11-20 08:03:06 +00:00
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