how to get mtd_info in kernel space?

[Xiaogeng (Shawn) Jin]

Thanks for the answer. My proposed device will contain basically some 
configuration data. But they are not as simple as MAC address. The size 
will grow dynamically.

I want such a flexible function to get minor number because our 
partitions may be changed later thus those numbers cannot be fixed. 
Anyway, since now the only way is to use the fix minor number, I'm OK 
with current mechanism. ;)

- Shawn.