tree dcb9ee136bed1e1fdfd0800cdbb9a50550cf6206
parent 5639d9ad6ef0157586bfb5df35056039b611a448
author Tim Murray <timmurray@google.com> 1476220707 -0700
committer Tim Murray <timmurray@google.com> 1476222694 -0700

libsuspend: move to exponential backoff

If for some reason the system can't suspend (usually a driver bug),
libsuspend will currently attempt to retry suspend after 100ms. Because
entering suspend takes a significant amount of CPU time, this can be
extremely expensive and be a major contributor to rapid battery
drain. Move autosuspend to use exponential backoff if the previous
suspend attempt failed.

bug 32092914

Change-Id: I3e9e944f290de5f1853a02e3f61721ba9159df46