Hi, On Mon, Sep 18, 2017 at 5:50 AM, Проклов Александр Валерьевич <ProklovAV@xxxxxxxxxxxxxxxx> wrote: > 15.09.2017 16:46, Luiz Augusto von Dentz пишет: >> >> Ive just a set of patches adressing race condition with StartDiscovery >> and StopDiscovery, please have a try. Also it is not a good idea to >> mix usage of D-Bus with btmgmt, they might not play well together >> especially when it comes to discovery. >> > > Thank you, I add "patch v2 adapter: Refactor code around discovery" to > source bluez-5.47 and compile it. > > My test results: > > 1. btmgmt after "find" command NOT set org.bluez.Adapter1 string:Discovering > =1 . But the Discovery process is already running, why he does not do it? > btmgmt not use dbus for managment? btmgmt uses the kernel management interface not D-Bus, this is why I said it may not play well with bluetoothd. > 2. If i send method StartDiscovery via dbus-send command, i see > org.bluez.Adapter1 string:Discovering =1 status. But I can not stop the > process, method StopDiscovery - has no effect. The StopDiscovery can only stop discovery started by the client, if you use btmgmt to start then it can only be stopped by btmgmt. > "btmgmt stop-find" - has no effect, in therminal i see: > hci0 type 7 discovering off > hci0 type 7 discovering on > hci0 type 7 discovering off > hci0 type 7 discovering on > hci0 type 7 discovering off > hci0 type 7 discovering on > > after btmgmt power off and btmgmt power on > org.bluez.Adapter1 string:Discovering =0 > > I assume that the method StopDiscovery must completely terminate the process > StartDiscovery, regardless of the way the scan was started (btmgmt, > dbus-send, hcitool, bluetoothctl or more other). Only if StartDiscovery was initiated by the same D-Bus connection/process, and in case you are wondering there is proper support for discovery in bluetoothctl which does use D-Bus to control the discovery. > -- > To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" > in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Luiz Augusto von Dentz -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
