tree 1149afd6c48dcb408f01e75ad250165522693188
parent 6a31d4aeab85a02f9a57ca37b935054393daa794
author Alan Cox <alan@linux.intel.com> 1248688688 +0100
committer Linus Torvalds <torvalds@linux-foundation.org> 1248722602 -0700

tty: Fix a USB serial crash/scribble

The port lock is used to protect the port state. However the port structure
is freed on a hangup, then the lock taken on a close. The right fix is to
drop the port on tty->shutdown() but we can't yet do that due to sleep v
non-sleeping rules. Instead do the next best thing and fix it up when we are
not in -rc season.

Reported-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Tested-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>