src/modules/bluetooth/module-bluez5-device.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
New commits: commit 6a786c93758b9cf2128938a8459c3387c0532a1e Author: Juha Kuikka <juha.kui...@synapse.com> Date: Fri Apr 15 17:37:22 2016 -0700 bluetooth: fix race condition in BlueZ5 device disconnection SW: Pulseaudio 8.0 / BlueZ 5.39 Symptoms: While disconnecting/reconnecting a paired bluetooth headset (LG HBS750) audio fails roughly on every other connection. On a failed connection "pactl list cards" shows the bluetooth device's card but "Active Profile: off". Issuing "pacmd set-card-profile X a2dp_sink" makes audio work immediately. I realized that when this happened, the previous disconnection did not remove the card, instead it was only configured for "Active Profile: off" but otherwise left in place. Upon looking at PA debug logs I saw that the transport for the a2dp_sink was first set into disconnected state and then into idle state. In "device_connection_changed_cb()" this causes the "pa_bluetooth_device_any_transport_connected()" return true and the module-bluez5-device is not unloaded. Further investigation shows that this is caused by a race of module-bluez5-device.c:thread_func() and MediaPoint1::ClearConfiguration(). When the FD in thread_func() is closed (POLLHUP) an BLUETOOTH_MESSAGE_STREAM_FD_HUP message is sent into the main thread. The handler of this message unconditionally sets the transport into IDLE state. This is a problem if it has already been set into DISCONNECTED state. diff --git a/src/modules/bluetooth/module-bluez5-device.c b/src/modules/bluetooth/module-bluez5-device.c index a05ae8d..0914bfb 100644 --- a/src/modules/bluetooth/module-bluez5-device.c +++ b/src/modules/bluetooth/module-bluez5-device.c @@ -2142,7 +2142,8 @@ static int device_process_msg(pa_msgobject *obj, int code, void *data, int64_t o pa_assert_se(pa_card_set_profile(m->card, pa_hashmap_get(m->card->profiles, "off"), false) >= 0); break; case BLUETOOTH_MESSAGE_STREAM_FD_HUP: - pa_bluetooth_transport_set_state(u->transport, PA_BLUETOOTH_TRANSPORT_STATE_IDLE); + if (u->transport->state > PA_BLUETOOTH_TRANSPORT_STATE_IDLE) + pa_bluetooth_transport_set_state(u->transport, PA_BLUETOOTH_TRANSPORT_STATE_IDLE); break; } _______________________________________________ pulseaudio-commits mailing list pulseaudio-commits@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pulseaudio-commits