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Commit 90dbad8c authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
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serdev: ttyport: fix tty locking in close



Make sure to hold the tty lock as required when calling tty-driver
close() (e.g. to avoid racing with hangup()).

Note that the serport active flag is currently set under the lock at
controller open, but really isn't protected by it.

Fixes: cd6484e1 ("serdev: Introduce new bus for serial attached devices")
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8bcd4e6a
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