K 10
svn:author
V 2
ed
K 8
svn:date
V 27
2008-11-12T09:04:44.072579Z
K 7
svn:log
V 329
Don't forget to relock the TTY after uiomove() returns an error.

Peter Holm just discovered this funny bug inside the TTY code: if
uiomove() in ttydisc_write() returns an error, we forget to relock the
TTY before jumping out of ttydisc_write(). Fix it by placing
tty_unlock() and tty_lock() around uiomove().

Submitted by:	pho

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