The tx tasklet and rx tasklet (if not currently running on this cpu)
must be disabled to prevent concurrent access while updating the
tx buffer counts.
Signed-off-by: Peter Hurley <[email protected]>
---
net/bluetooth/hci_conn.c | 8 ++++++--
1 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 3e0a4b5..38993f6 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -359,6 +359,10 @@ int hci_conn_del(struct hci_conn *conn)
del_timer(&conn->auto_accept_timer);
+ tasklet_disable(&hdev->tx_task);
+ if (!in_serving_softirq())
+ tasklet_disable(&hdev->rx_task);
+
if (conn->type == ACL_LINK) {
struct hci_conn *sco = conn->link;
if (sco)
@@ -379,12 +383,12 @@ int hci_conn_del(struct hci_conn *conn)
}
}
- tasklet_disable(&hdev->tx_task);
-
hci_conn_hash_del(hdev, conn);
if (hdev->notify)
hdev->notify(hdev, HCI_NOTIFY_CONN_DEL);
+ if (!in_serving_softirq())
+ tasklet_enable(&hdev->rx_task);
tasklet_enable(&hdev->tx_task);
skb_queue_purge(&conn->data_q);
--
1.7.4.1