Just passed the CCSP. Please let me know if i can use passing CCSP as CPE (professional certification) for CISSP.
If I am not mistaken, you cannot use CPEs for passing an exam. However you should be able to use the study time.
Let's ask @AndreaMoore to pass to the appropriate folk internally for an answer.
There is some credit for studying that can be earned. You will want to look at CPE guidelines. I have never used my study time for CPEs or could better advise you. CompTIA is the only organization that I know of that equates earning some certifications for continuing education credit.
Per the CPE guidelines handbook:
You can earn Group A CPE credits for: Self-study related to research for a project or preparing for a certification examination.