gpio: fix line flag validation in lineevent_create
authorKent Gibson <warthog618@gmail.com>
Mon, 9 Sep 2019 03:24:06 +0000 (03:24 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 19 Sep 2019 07:08:03 +0000 (09:08 +0200)
commita26cf23ddf7311edd0237a3c010bc11f068f3dce
treea8556195be1e6666c06a334ddceb65c3e099c681
parentca73cdcaead3a64250c5323c296b87acceaf1ac6
gpio: fix line flag validation in lineevent_create

commit 5ca2f54b597c816df54ff1b28eb99cf7262b955d upstream.

lineevent_create should not allow any of GPIOHANDLE_REQUEST_OUTPUT,
GPIOHANDLE_REQUEST_OPEN_DRAIN or GPIOHANDLE_REQUEST_OPEN_SOURCE to be set.

Fixes: d7c51b47ac11 ("gpio: userspace ABI for reading/writing GPIO lines")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpio/gpiolib.c