samus: avoid waking extpower task until task has been initialized

Fix booting without battery by avoiding waking the extpower task
until it has run extpower_board_hacks() the first time.

The problem was if there was no battery and AC was attached,
extpower_board_hacks() would run twice on boot, once in extpower
task initialization, before the while(1) loop, and a second time
due to the AC_PRESENT interrupt. This would cause
extpower_board_hacks() to think that AC had transitioned from 1
to 1, which represents a glitch on ACOK, so it would disable
charging, thus causing us to lose power.

BUG=chrome-os-partner:35570
BRANCH=samus
TEST=load on a samus and boot with and without battery

Change-Id: Idf6d0022f7dbedbb66a2fbe1c2b7dd885eabc43b
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/250301
Reviewed-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

0 files changed, 0 insertions, 0 deletions