diff options
| author | Fabio Estevam <fabio.estevam@nxp.com> | 2016-05-20 01:59:54 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-25 10:40:33 -0700 |
| commit | a7cfaf165ed0f0b1e5e8636f9f28843b2b90139a (patch) | |
| tree | 95b114e5cceb1064c9ce2a9eb020dd2cb5ad2ab3 /drivers/tty/vt | |
| parent | 3e5af8e04a3b104b6a8ccca4ff33644b5bcc21f0 (diff) | |
serial: serial_core: Perform NULL checks for release/request_port ops
Doing the following UART bind/unbind sequence on a i.mx platform causes
a kernel crash due to NULL pointer dereference:
echo 21f4000.serial > /sys/bus/platform/drivers/imx-uart/bind
echo 21f4000.serial > /sys/bus/platform/drivers/imx-uart/unbind
Fix this problem by adding NULL checks prior to calling release/request_port
ops.
Reported-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Tested-by: Fugang Duan <fugang.duan@nxp.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/vt')
0 files changed, 0 insertions, 0 deletions