[ltp] trackpoint: 2.6.12 kernel patched, cannot echo to files

[Kamesh Madduri]

Hi all,

My problem is quite similar to the one posted by Andreas recently:
http://mailman.linux-thinkpad.org/pipermail/linux-thinkpad/2005-October/029905.html

I have patched my Ubuntu Breezy (kernel 2.6.12) with Steve's trackpoint patch
and recompiled the kernel. 

My touchpad is enabled and so trackpoint is in serio0/serio2

# dmesg | grep -i track 
IBM TrackPoint firmware: 0x0E
input: TrackPoint IBM TrackPoint on synaptics-pt/serio0

# ls /sys/devices/platform/i8042/serio0/serio2
bind_mode    drvctl   middle_btn_disable  reach        speed
bus          ext_dev  mindrag             resetafter   thresh
description  id       power               resolution   transparent
draghys      inertia  press_to_select     sensitivity  upthresh
driver       jenks    rate                skipback     ztime

Now when I do 
# sudo echo -n 1 > /sys/devices/platform/i8042/serio0/serio2/press_to_select

I get
bash: /sys/devices/platform/i8042/serio0/serio2/press_to_select: Permission
denied

Help me!

Thanks,
Kames