Input: synaptics - fix reconnect logic on MT devices

synaptics_set_advanced_gesture_mode() affect capabilities bits we should
perform comparison after calling this function, otherwise they will never
match and we will be forced to perform full reconnect.

Signed-off-by: Alexandre Peixoto Ferreira <alexandref75@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index da392c2..fdf089c 100644 (file)
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -766,12 +766,6 @@ static int synaptics_reconnect(struct psmouse *psmouse)
                return -1;
        }
 
-       if (old_priv.identity != priv->identity ||
-           old_priv.model_id != priv->model_id ||
-           old_priv.capabilities != priv->capabilities ||
-           old_priv.ext_cap != priv->ext_cap)
-               return -1;
-
        if (synaptics_set_absolute_mode(psmouse)) {
                printk(KERN_ERR "Unable to initialize Synaptics hardware.\n");
                return -1;
@@ -782,6 +776,19 @@ static int synaptics_reconnect(struct psmouse *psmouse)
                return -1;
        }
 
+       if (old_priv.identity != priv->identity ||
+           old_priv.model_id != priv->model_id ||
+           old_priv.capabilities != priv->capabilities ||
+           old_priv.ext_cap != priv->ext_cap) {
+               printk(KERN_ERR "Synaptics hardware appears to be different: "
+                       "id(%ld-%ld), model(%ld-%ld), caps(%lx-%lx), ext(%lx-%lx).\n",
+                       old_priv.identity, priv->identity,
+                       old_priv.model_id, priv->model_id,
+                       old_priv.capabilities, priv->capabilities,
+                       old_priv.ext_cap, priv->ext_cap);
+               return -1;
+       }
+
        return 0;
 }