Commit 5638d9ea authored Oct 17, 2022 by Luiz Augusto von Dentz

Bluetooth: hci_conn: Fix not restoring ISO buffer count on disconnect

When disconnecting an ISO link the controller may not generate
HCI_EV_NUM_COMP_PKTS for unacked packets which needs to be restored in
hci_conn_del otherwise the host would assume they are still in use and
would not be able to use all the buffers available.

Fixes: 26afbd82 ("Bluetooth: Add initial implementation of CIS connections")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Tested-by: Frédéric Danis <frederic.danis@collabora.com>

parent 7c9524d9

net/bluetooth/hci_conn.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -1067,10 +1067,21 @@ int hci_conn_del(struct hci_conn *conn)
		hdev->acl_cnt += conn->sent;
		} else {
		struct hci_conn *acl = conn->link;

		if (acl) {
		acl->link = NULL;
		hci_conn_drop(acl);
		}

		/* Unacked ISO frames */
		if (conn->type == ISO_LINK) {
		if (hdev->iso_pkts)
		hdev->iso_cnt += conn->sent;
		else if (hdev->le_pkts)
		hdev->le_cnt += conn->sent;
		else
		hdev->acl_cnt += conn->sent;
		}
		}

		if (conn->amp_mgr)