Hi Vasily, >> This reverts commit d5bb334a8e171b262e48f378bd2096c0ea458265. >> >> This commit breaks some HID devices, see [1] for details >> >> https://bugzilla.kernel.org/show_bug.cgi?id=203643 >> >> Signed-off-by: Vasily Khoruzhick <anarsoul@xxxxxxxxx> >> Cc: stable@xxxxxxxxxxxxxxx > > let me have a look at this. Maybe there is a missing initialization for older HID devices that we need to handle. Do you happen to have the full btmon binary trace from controller initialization to connection attempt for me? > > Are both devices Bluetooth 2.1 or later device that are supporting Secure Simple Pairing? Or is one of them a Bluetooth 2.0 or earlier device? I am almost certain that you have a Bluetooth 2.0 mouse. I made a really stupid mistake in the key size check logic and forgot to bind it to SSP support. Can you please check the patch that I just send you. https://lore.kernel.org/linux-bluetooth/20190522070540.48895-1-marcel@xxxxxxxxxxxx/T/#u Regards Marcel
