drop packets out of sync

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/hwdata.c b/src/hwdata.c
index d39211f..cd93fe0 100644
--- a/src/hwdata.c
+++ b/src/hwdata.c
@@ -39,16 +39,20 @@ bool read_hwdata(struct HWData *hw, const struct input_event* ev)
                                 CLEARBIT(hw->button, MT_BUTTON_RIGHT);
                         break;
                 case BTN_MT_REPORT_PACKET:
+                        hw->in_packet = ev->value;
                         if (ev->value)
                                 hw->nfinger = 0;
                         break;
                 case BTN_MT_REPORT_FINGER:
+                        hw->in_finger = ev->value;
                         if (!ev->value && hw->nfinger < DIM_FINGER)
                                 hw->nfinger++;
                         break;
                 }
                 break;
         case EV_ABS:
+                if (!hw->in_packet || !hw->in_finger)
+                        break;
                 if (hw->nfinger == DIM_FINGER)
                         break;
                 switch (ev->code) {