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| /openbmc/linux/drivers/tty/serdev/ |
| H A D | serdev-ttyport.c | diff 90dbad8cd6efccbdce109d5ef0724f8434a6cdde Fri Nov 03 09:30:56 CDT 2017 Johan Hovold <johan@kernel.org> 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: cd6484e1830b ("serdev: Introduce new bus for serial attached devices")
Signed-off-by: Johan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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