[PATCH xf86-input-synaptics] Reset open slots array on device disable

[Chase Douglas]

The open slots array is used for clickpad cumulative delta computation.
If the array is not reset and becomes corrupted during the device
disable/enable cycle, the cumulative deltas may be wrong. This manifests
as jumpy cursor behavior on some clickpads after suspend/resume.

Signed-off-by: Chase Douglas <chase.douglas at canonical.com>
---
 src/synaptics.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/src/synaptics.c b/src/synaptics.c
index 77eb5be..cc76c76 100644
--- a/src/synaptics.c
+++ b/src/synaptics.c
@@ -1104,6 +1104,7 @@ SynapticsReset(SynapticsPrivate *priv)
     priv->lastButtons = 0;
     priv->prev_z = 0;
     priv->prevFingers = 0;
+    memset(priv->open_slots, 0, priv->num_slots * sizeof(int));
 }
 
 
-- 
1.7.9.5