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Bluetooth: Perform a power cycle when receiving hardware error event

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When receiving a HCI Hardware Error event, the controller should be
assumed to be non-functional until issuing a HCI Reset command.

The Bluetooth hardware errors are vendor specific and so add a
new hdev->hw_error callback that drivers can provide to run extra
code to handle the hardware error.

After completing the vendor specific error handling perform a full
reset of the Bluetooth stack by closing and re-opening the transport.

Based-on-patch-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann
2015-01-28 11:09:55 -08:00
parent 5c912495b7
commit c7741d16a5
3 changed files with 27 additions and 1 deletions
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4
net/bluetooth/hci_event.c
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@@ -3100,7 +3100,9 @@ static void hci_hardware_error_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_ev_hardware_error *ev = (void *) skb->data;
BT_ERR("%s hardware error 0x%2.2x", hdev->name, ev->code);
hdev->hw_error_code = ev->code;
queue_work(hdev->req_workqueue, &hdev->error_reset);
}
static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)