tty: Minor tidyups and document fixes for n_tty
authorAlan Cox <alan@redhat.com>
Mon, 13 Oct 2008 09:45:06 +0000 (10:45 +0100)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 13 Oct 2008 16:51:44 +0000 (09:51 -0700)
Remove/fix some bogus NULL checks, comment some locking etc

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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