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authorAlan Cox <alan@redhat.com>2009-01-02 13:44:04 +0000
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-02 10:19:37 -0800
commit4bd43f2c31848d751f63e8753cd2788d48fb5f30 (patch)
treef88e890bbee89421271437761024130e0c831853 /fs/devpts
parent7e94b1d9bffc18dca3b45554d9d118a3ffcc4d1b (diff)
tty: Fix close races in USB serial
USB serial has always had races where the tty port usage count can hit zero during a receive event. The internal locking is a mutex so we can't use that in the IRQ handlers. With krefs we can tackle this differently but we still need to be careful. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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