[Bug 73571] bluetooth headsets fail with log entry: re-auth of legacy device not possible

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https://bugzilla.kernel.org/show_bug.cgi?id=73571

--- Comment #1 from yuyuyak@xxxxxxxxx ---
My C-fu being very weak I have resorted to using breakpoint messages via the
convenient BT_INFO command.  I've download the vanilla 3.14.0 kernel.  Starting
with hci_event.c I first ascertained that hci_conn_ssp_enable isn't true,
triggering the re-auth message.  So far I've only found 2 places where that
should happen, in hci_event.c (hci_remote_ext_features_evt) and hci_conn.c.
(hci_acl_create_connection). Putting breakpoint messages on either side of
those statements, it appears we never get to them at all.  That is, the
set_bit(HCI_CONN_SSP_ENABLED... statements.
These are bluetooth 2.0 headsets.  More info as I get it, if I knew what I was
doing I'd be dangerous.

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