To: linux-kernel@vger.kernel.org, vojtech@suse.cz
Subject: [patch] Synaptics touchpad with Trackpoint needs ps/2 reset
From: Arne Koewing <ark@gmx.net>
Date: Tue, 25 Mar 2003 08:25:47 +0100
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Hi!

I recently posted this to linux-kernel (with a different subject)
I had included a wrong ptch there, i think this one is ok.

As some people before I had the 'Dell trackpoint does not work' problem
after upgrading to 2.5.XX:
That was:
     
the trackpoint of your dell won't work until:
    - hibernate and wake up the system again
    - plug in an external mouse (you may remove it immediately)

it seems that dells hardware is disabling the trackpoint if you
probed for the touchpad.
A device reset after probing does help, but I've no idea how this
would affect other synaptics touchpad devices although I think
most devices will not complain about one extra reset.


  Arne


diff -bruN   linux-2.5.65-old/drivers/input/mouse/psmouse.c linux-2.5.65/drivers/input/mouse/psmouse.c 
--- linux-2.5.65-old/drivers/input/mouse/psmouse.c      2003-03-05 04:29:03.000000000 +0100
+++ linux-2.5.65/drivers/input/mouse/psmouse.c  2003-03-26 09:11:10.000000000 +0100
@@ -345,6 +345,7 @@
                   thing up. */
                psmouse->vendor = "Synaptics";
                psmouse->name = "TouchPad";
+              psmouse_command(psmouse, param, PSMOUSE_CMD_RESET_BAT);
                return PSMOUSE_PS2;
        }
-
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