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virtio: console: add locking in port unplug path
authorAmit Shah <amit.shah@redhat.com>
Mon, 29 Jul 2013 04:54:15 +0000 (14:24 +0930)
committerRusty Russell <rusty@rustcorp.com.au>
Mon, 29 Jul 2013 05:20:48 +0000 (14:50 +0930)
Port unplug can race with close() in port_fops_release().
port_fops_release() already takes the necessary locks, ensure
unplug_port() does that too.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

No differences found
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