tree cbf74d688922f126428768aa5f7d3eef0a2472c4
parent 04ac452dadbf2eb8cc0fba82929e94c042f7ba38
author Johan Hovold <johan@kernel.org> 1493202261 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1497445554 +0200

serial: ifx6x60: fix use-after-free on module unload

commit 1e948479b3d63e3ac0ecca13cbf4921c7d17c168 upstream.

Make sure to deregister the SPI driver before releasing the tty driver
to avoid use-after-free in the SPI remove callback where the tty
devices are deregistered.

Fixes: 72d4724ea54c ("serial: ifx6x60: Add modem power off function in the platform reboot process")
Cc: Jun Chen <jun.d.chen@intel.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>