[J/M][PATCH 1/1] Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST

[Aaron Ma]

From: Luiz Augusto von Dentz <luiz.von.dentz at intel.com>

BugLink: https://bugs.launchpad.net/bugs/2063067

If we received HCI_EV_IO_CAPA_REQUEST while
HCI_OP_READ_REMOTE_EXT_FEATURES is yet to be responded assume the remote
does support SSP since otherwise this event shouldn't be generated.

Link: https://lore.kernel.org/linux-bluetooth/CABBYNZ+9UdG1cMZVmdtN3U2aS16AKMCyTARZZyFX7xTEDWcMOw@mail.gmail.com/T/#t
Fixes: c7f59461f5a7 ("Bluetooth: Fix a refcnt underflow problem for hci_conn")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz at intel.com>
(cherry picked from commit 7e74aa53a68bf60f6019bd5d9a9a1406ec4d4865)
Signed-off-by: Aaron Ma <aaron.ma at canonical.com>
---
 net/bluetooth/hci_event.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 35d0921b72f3d..fc0df5853f5eb 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5306,9 +5306,12 @@ static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data,
 	hci_dev_lock(hdev);
 
 	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
-	if (!conn || !hci_conn_ssp_enabled(conn))
+	if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
 		goto unlock;
 
+	/* Assume remote supports SSP since it has triggered this event */
+	set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
+
 	hci_conn_hold(conn);
 
 	if (!hci_dev_test_flag(hdev, HCI_MGMT))
-- 
2.34.1