tree 2efd4647a1f0bd9e68239aaa720039778ff0b8a0
parent 86bcec037ad0f3e778248862451e5cd18d8e47e2
author Hsin-Yu Chao <hychao@google.com> 1444292654 +0800
committer chrome-bot <chrome-bot@chromium.org> 1455873420 -0800

CHROMIUM: Add reconnect mechanism to HFP/HSP

A2DP has reconnect mechanism implemented in plugin/policy.c,
at connection failure with err code -EAGAIN, a timer will be
scheduled to initiate connection in 2 seconds.
A confusing scenario is observed occasionally that user got
only A2DP when a BT headset is connected, but not HFP or HSP.
When it happens, user is unable to use bidrectional audio, and
with headset disconnected and then reconnected, both A2DP and
HFP/HSP work fine.

This change adds similar reconnect mechanism for HFP/HSP, so
that Chrome OS users can have more consistent experience on
BT audio.

BUG=chromium:527575
TEST=Connect BT headset, disconnect and reconnect. Verify
this audio device cab be used for A2DP and HFP/HSP.

Change-Id: I97afbf7a6919309514bfa0e0446b54b6c85ab819
Reviewed-on: https://chromium-review.googlesource.com/304441
Commit-Ready: Hsinyu Chao <hychao@chromium.org>
Tested-by: Hsinyu Chao <hychao@chromium.org>
Reviewed-by: Miao-chen Chou <mcchou@chromium.org>