Don't initialize touch state if device does is not multitouch

And don't attempt to use it either.

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/src/eventcomm.c b/src/eventcomm.c
index 6a55df0..41504f9 100644
--- a/src/eventcomm.c
+++ b/src/eventcomm.c
@@ -108,7 +108,7 @@ UninitializeTouch(InputInfoPtr pInfo)
     SynapticsPrivate *priv = (SynapticsPrivate *)pInfo->private;
     struct eventcomm_proto_data *proto_data = (struct eventcomm_proto_data*)priv->proto_data;
 
-    if (!proto_data->mtdev)
+    if (!priv->has_touch)
         return;
 
     free(proto_data->open_slots);
@@ -136,6 +136,9 @@ InitializeTouch(InputInfoPtr pInfo)
     struct eventcomm_proto_data *proto_data = (struct eventcomm_proto_data*)priv->proto_data;
     int i;
 
+    if (!priv->has_touch)
+        return;
+
     proto_data->mtdev = mtdev_new_open(pInfo->fd);
     if (!proto_data->mtdev)
     {
@@ -630,6 +633,9 @@ EventProcessTouchEvent(InputInfoPtr pInfo, struct CommData *comm,
     SynapticsPrivate *priv = (SynapticsPrivate *)pInfo->private;
     struct eventcomm_proto_data *proto_data = priv->proto_data;
 
+    if (!priv->has_touch)
+        return;
+
     if (ev->code == ABS_MT_SLOT)
     {
         EventProcessTouch(pInfo);