Use the wakeup count interface for requesting suspend, instead of
autosleep, to allow userspace to collect stats on suspend/resume
activity.
Change-Id: I44b5ef031b2bdc5b09c904fb2adbbe16370c2984
Prevents possible SIGSEGV on second autosuspend_enable attempt when
first intialization attempt fails. autosuspend_inited should only
be set once autosuspend_ops has been assigned.
Consider the first call to autosuspend_enable().
autosuspend_init() sets its inited flag to true, and attempts to
set autosuspend_ops. If all the other autosuspend_*_init() attempts
fail, autosuspend_init() returns -1, which autosuspend_enable()
will return as a failure. A second call to autosuspend_enable()
will check autosuspend_init() and see that autosuspend has already
been initialized. It will attempt to access autosuspend_ops, which
were not set in the first initialization attempt, causing a SIGSEGV.
Change-Id: Ib2d3ee62fee4c3b6d0323e5b7f3709a23c6b923f
libsuspend provides functions autosuspend_enable() and
autosuspend_disable() to trigger suspend on a variety of different
kernels.
Change-Id: I5dc28fb51532fa7c514330f1cfde7698d31d734c
Todd Poynor