1 files changed, 57 insertions, 42 deletions

diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index f0f9413d762c..e42a0a4345ac 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -40,33 +40,70 @@
 #define YMIN_NOMINAL 1408
 #define YMAX_NOMINAL 4448
 
+
 /*****************************************************************************
- *      Synaptics communications functions
+ *      Stuff we need even when we do not want native Synaptics support
  ****************************************************************************/
 
 /*
- * Send a command to the synpatics touchpad by special commands
+ * Set the synaptics touchpad mode byte by special commands
  */
-static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
+static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
 {
-        if (psmouse_sliced_command(psmouse, c))
+        unsigned char param[1];
+
+        if (psmouse_sliced_command(psmouse, mode))
                 return -1;
-        if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
+        param[0] = SYN_PS_SET_MODE2;
+        if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
                 return -1;
         return 0;
 }
 
+int synaptics_detect(struct psmouse *psmouse, int set_properties)
+{
+        struct ps2dev *ps2dev = &psmouse->ps2dev;
+        unsigned char param[4];
+
+        param[0] = 0;
+
+        ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+        ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+        ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+        ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
+        ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
+
+        if (param[1] != 0x47)
+                return -ENODEV;
+
+        if (set_properties) {
+                psmouse->vendor = "Synaptics";
+                psmouse->name = "TouchPad";
+        }
+
+        return 0;
+}
+
+void synaptics_reset(struct psmouse *psmouse)
+{
+        /* reset touchpad back to relative mode, gestures enabled */
+        synaptics_mode_cmd(psmouse, 0);
+}
+
+#ifdef CONFIG_MOUSE_PS2_SYNAPTICS
+
+/*****************************************************************************
+ *      Synaptics communications functions
+ ****************************************************************************/
+
 /*
- * Set the synaptics touchpad mode byte by special commands
+ * Send a command to the synpatics touchpad by special commands
  */
-static int synaptics_mode_cmd(struct psmouse *psmouse, unsigned char mode)
+static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, unsigned char *param)
 {
-        unsigned char param[1];
-
-        if (psmouse_sliced_command(psmouse, mode))
+        if (psmouse_sliced_command(psmouse, c))
                 return -1;
-        param[0] = SYN_PS_SET_MODE2;
-        if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_SETRATE))
+        if (ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO))
                 return -1;
         return 0;
 }
@@ -529,12 +566,6 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
         clear_bit(REL_Y, dev->relbit);
 }
 
-void synaptics_reset(struct psmouse *psmouse)
-{
-        /* reset touchpad back to relative mode, gestures enabled */
-        synaptics_mode_cmd(psmouse, 0);
-}
-
 static void synaptics_disconnect(struct psmouse *psmouse)
 {
         synaptics_reset(psmouse);
@@ -569,30 +600,6 @@ static int synaptics_reconnect(struct psmouse *psmouse)
         return 0;
 }
 
-int synaptics_detect(struct psmouse *psmouse, int set_properties)
-{
-        struct ps2dev *ps2dev = &psmouse->ps2dev;
-        unsigned char param[4];
-
-        param[0] = 0;
-
-        ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
-        ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
-        ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
-        ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES);
-        ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO);
-
-        if (param[1] != 0x47)
-                return -1;
-
-        if (set_properties) {
-                psmouse->vendor = "Synaptics";
-                psmouse->name = "TouchPad";
-        }
-
-        return 0;
-}
-
 #if defined(__i386__)
 #include <linux/dmi.h>
 static struct dmi_system_id toshiba_dmi_table[] = {
@@ -680,4 +687,12 @@ int synaptics_init(struct psmouse *psmouse)
         return -1;
 }
 
+#else /* CONFIG_MOUSE_PS2_SYNAPTICS */
+
+int synaptics_init(struct psmouse *psmouse)
+{
+        return -ENOSYS;
+}
+
+#endif /* CONFIG_MOUSE_PS2_SYNAPTICS */