converting char* to type - "long"

["Arun Srinivasan" <arunlkml@xxxxxxxxx>]

I am passing a "char*" which is an string that represents an address of type "long" from user space to kernel space. So in kernel space how can I convert this string into the actual type "long" ? I am assuming there is no (long)atoi() in kernel.

-- 
"There are 10 people in the world - those who understand binary and those who dont !"