[RFC PATCH xf86-input-libinput v2] Do not crash if the device is invalid

[Olivier Fourdan]

https://bugs.freedesktop.org/show_bug.cgi?id=89296

Signed-off-by: Olivier Fourdan <ofourdan at redhat.com>
---

 v2: Move the test to LibinputSetProperty() and do it only once

 src/libinput.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/libinput.c b/src/libinput.c
index 9613fbd..ac14adb 100644
--- a/src/libinput.c
+++ b/src/libinput.c
@@ -1550,8 +1550,14 @@ static int
 LibinputSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val,
                  BOOL checkonly)
 {
+	InputInfoPtr pInfo = dev->public.devicePrivate;
+	struct xf86libinput *driver_data = pInfo->private;
+	struct libinput_device *device = driver_data->device;
 	int rc;
 
+	if (device == NULL)
+		return XI_BadDevice;
+
 	if (atom == prop_tap)
 		rc = LibinputSetPropertyTap(dev, atom, val, checkonly);
 	else if (atom == prop_calibration)
-- 
2.1.0