Newest kernel appears to break tap feature - good starting point for kernel development?

[vivi@mage.me.uk (Reza)]

Hi all,

I'm interested in getting involved in kernel development. I compiled the 
latest kernel and found that it broke the tap feature on my asus x54h 
k54l. I had a look at the way the devices were interpreted and 
/proc/bus/input/devices gave different results. This seems like it may 
be a good starting point but I'm not sure where to go from here or 
whether it's an issue with the kernel. I presume it is as switching back 
to the older kernel fixes the tapping for left click. Any advice on 
where to go from here would be greatly appreciated. Thanks.

Reza


-works fine-

Linux laptop 3.1.0-1-amd64 #1 SMP Tue Jan 10 05:01:58 UTC 2012 x86_64 
GNU/Linux

I: Bus=0011 Vendor=0002 Product=0001 Version=0063
N: Name="PS/2 Logitech Wheel Mouse"
P: Phys=isa0060/serio4/input0
S: Sysfs=/devices/platform/i8042/serio4/input/input6
U: Uniq=
H: Handlers=mouse0 event6
B: PROP=0
B: EV=7
B: KEY=70000 0 0 0 0
B: REL=103


-latest kernel where the tap feature breaks-

Linux laptop 3.3.0-rc2+ #5 SMP Fri Feb 3 21:05:27 GMT 2012 x86_64 GNU/Linux

I: Bus=0011 Vendor=0002 Product=000e Version=0000
N: Name="ETPS/2 Elantech Touchpad"
P: Phys=isa0060/serio4/input0
S: Sysfs=/devices/platform/i8042/serio4/input/input6
U: Uniq=
H: Handlers=mouse0 event6
B: PROP=0
B: EV=b
B: KEY=6420 30000 0 0 0 0
B: ABS=260800011000003