Peter Wemm 446fe15067 Apply a bandaid to a problem elsewhere in the driver, when the process is
blocked in a write() while waiting for the output to drain, sleep only
for tp->t_timeout, not forever.  This only seems to happen when there is
either a modem lockup holding the hardware flow control down, or due to
some problem in the driver with processes attempting to write after the
modem has hung up (eg: elm, tf).
1996-07-26 13:47:38 +00:00
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