tree 7a9deb3454eb3fb2853e214dcbf663c55d28fb38
parent 72d6d2bbbab2e0b9de260a08fa317a379b345e17
author John Newlin <jnewlin@google.com> 1381787925 -0700
committer John Newlin <jnewlin@google.com> 1382117250 -0700

Use sem to protect pon initialization.

Something from user space is calling to the init the pon twice, and that
leads to a very unhappy kernel.  Only let start be called one at a time.

Change-Id: Id1c030ba8d4205aae85142f8e6ae4e95b5a837dc