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-rw-r--r--net/bluetooth/smp.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 3d38553..3b63c7f 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -1658,6 +1658,13 @@ static inline struct l2cap_chan *smp_new_conn_cb(struct l2cap_chan *pchan)
chan->omtu = pchan->omtu;
chan->mode = pchan->mode;
+ /* Other L2CAP channels may request SMP routines in order to
+ * change the security level. This means that the SMP channel
+ * lock must be considered in its own category to avoid lockdep
+ * warnings.
+ */
+ atomic_set(&chan->nesting, L2CAP_NESTING_SMP);
+
BT_DBG("created chan %p", chan);
return chan;
@@ -1715,6 +1722,9 @@ int smp_register(struct hci_dev *hdev)
chan->imtu = L2CAP_DEFAULT_MTU;
chan->ops = &smp_root_chan_ops;
+ /* Set correct nesting level for a parent/listening channel */
+ atomic_set(&chan->nesting, L2CAP_NESTING_PARENT);
+
hdev->smp_data = chan;
return 0;
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