diff options
| author | Marcel Holtmann | 2014-11-02 08:15:38 +0100 |
|---|---|---|
| committer | Johan Hedberg | 2014-11-02 10:03:45 +0200 |
| commit | 75e0569f7fc22272ec5e3b99bf94c6f0ad43b35f (patch) | |
| tree | 2999d19fab98e9fe418ff60739f69fa3d999ef88 | |
| parent | 65efd2bf4885312b42de9829159789199221cc60 (diff) | |
Bluetooth: Add hci_reset_dev() for driver triggerd stack reset
Some Bluetooth drivers require to reset the upper stack. To avoid having
all drivers send HCI Hardware Error events, provide a generic function
to wrap the reset functionality.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
| -rw-r--r-- | include/net/bluetooth/hci_core.h | 1 | ||||
| -rw-r--r-- | net/bluetooth/hci_core.c | 18 |
2 files changed, 19 insertions, 0 deletions
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index b8685a77a15e..27ddb905b351 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -856,6 +856,7 @@ int hci_register_dev(struct hci_dev *hdev); void hci_unregister_dev(struct hci_dev *hdev); int hci_suspend_dev(struct hci_dev *hdev); int hci_resume_dev(struct hci_dev *hdev); +int hci_reset_dev(struct hci_dev *hdev); int hci_dev_open(__u16 dev); int hci_dev_close(__u16 dev); int hci_dev_reset(__u16 dev); diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 41b147c36d11..a12e018ee21c 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -4248,6 +4248,24 @@ int hci_resume_dev(struct hci_dev *hdev) } EXPORT_SYMBOL(hci_resume_dev); +/* Reset HCI device */ +int hci_reset_dev(struct hci_dev *hdev) +{ + const u8 hw_err[] = { HCI_EV_HARDWARE_ERROR, 0x01, 0x00 }; + struct sk_buff *skb; + + skb = bt_skb_alloc(3, GFP_ATOMIC); + if (!skb) + return -ENOMEM; + + bt_cb(skb)->pkt_type = HCI_EVENT_PKT; + memcpy(skb_put(skb, 3), hw_err, 3); + + /* Send Hardware Error to upper stack */ + return hci_recv_frame(hdev, skb); +} +EXPORT_SYMBOL(hci_reset_dev); + /* Receive frame from HCI drivers */ int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) { |