Index: xf86-input-tslib-0.0.6/src/tslib.c
===================================================================
--- xf86-input-tslib-0.0.6.orig/src/tslib.c	2009-11-29 20:03:29.734794324 +0000
+++ xf86-input-tslib-0.0.6/src/tslib.c	2009-11-29 20:29:24.066794215 +0000
@@ -205,7 +205,7 @@
 		 */
 		switch (priv->state) {
 			 case BUTTON_EMULATION_OFF :
-				 if(priv->lastp != samp.pressure) {
+				 if(!!priv->lastp != !!samp.pressure) {
 					 priv->lastp = samp.pressure;
 					 xf86PostButtonEvent(local->dev, TRUE,
 						 1, !!samp.pressure, 0, 2,
@@ -512,7 +512,7 @@
  	s = xf86CheckStrOption(dev->commonOptions, "path", NULL);
   	if (!s)
 		s = xf86CheckStrOption(dev->commonOptions, "Device", NULL);
- 
+
 	priv->ts = ts_open(s, 1);
 	xfree(s);