Certification For Linux Device Driver Programming

Hi All,
I'm looking for role change to Linux device Driver developer. My current role has no connection to Linux Device driver development and hence to support my stand i want to do a certification for the same.

I have googled but couldn't found any standard certification. I have submitted some patches to Linux community and have got myself listed as contributor for linux kernel 3.12.
Please tell me if there are any standard certification for the same and how much would it cost (any reference link) or is there anyother way which can support my stand for this role.

The best way to "certify" yourself as a Linux kernel developer is to help develop the Linux kernel... Dive into the documentation and examples and contribute something useful. Having code in the kernel itself is a far better paper to "hang on your wall" than some certificate which won't mean anything in six months.