The way I set it was to enable with the original labels or absolute label with relative mode. My mouse has absolute labels, but with relative mode set. My mouse won't work correctly without this patch. Relative and absolute mode can be set relatively easily.

Alexandre Julliard <julliard@winehq.org> wrote:
Christopher Cope <ccope3@utk.edu> writes:

@@ -286,8 +286,10 @@ static void enable_xinput2(void)
class->number, class->min, class->max, class->resolution, class->mode,
XGetAtomName( data->display, class->label ));
if (class->label == x11drv_atom( Rel_X ) || class->label == x11drv_atom( Rel_Y )) count++;
-            /* workaround for drivers that don't provide labels */
-            if (!class->label && class->number <= 1 && class->mode == XIModeRelative) count++;
+            /* workaround for drivers that don't provide correct labels */
+            if (((!class->label && class->number <= 1) || class->label == x11drv_atom( Abs_X ) ||
+    
           class->label == x11drv_atom( Abs_Y ))
+                && class->mode == XIModeRelative) count++;

The whole point of testing labels was because some platforms don't set
the relative mode correctly, so this is going to break them again.