serial: ifx6x60: fix use-after-free on module unload
authorJohan Hovold <johan@kernel.org>
Wed, 26 Apr 2017 10:24:21 +0000 (12:24 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 18 May 2017 14:43:55 +0000 (16:43 +0200)
commit1e948479b3d63e3ac0ecca13cbf4921c7d17c168
tree3ddc8770c4694b8652b7353f7ba42433f57f8897
parent5c9d6abed9e0a061de252a53ab687a1171502e81
serial: ifx6x60: fix use-after-free on module unload

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: stable <stable@vger.kernel.org> # 3.8
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>
drivers/tty/serial/ifx6x60.c