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author | Marcel Holtmann <marcel@holtmann.org> | 2015-01-28 11:09:55 -0800 |
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committer | Marcel Holtmann <marcel@holtmann.org> | 2015-01-28 21:26:24 +0100 |
commit | c7741d16a57cbf97eebe53f27e8216b1ff20e20c (patch) | |
tree | 8956a07a75e67675e8c3613708183a852b9e0559 /net/bluetooth/hci_core.c | |
parent | 5c912495b7a8ab6adae877979abfffba4340e06c (diff) | |
download | op-kernel-dev-c7741d16a57cbf97eebe53f27e8216b1ff20e20c.zip op-kernel-dev-c7741d16a57cbf97eebe53f27e8216b1ff20e20c.tar.gz |
Bluetooth: Perform a power cycle when receiving hardware error event
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>
Diffstat (limited to 'net/bluetooth/hci_core.c')
-rw-r--r-- | net/bluetooth/hci_core.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index d4c9152..79693a9 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -2151,6 +2151,26 @@ static void hci_power_off(struct work_struct *work) smp_unregister(hdev); } +static void hci_error_reset(struct work_struct *work) +{ + struct hci_dev *hdev = container_of(work, struct hci_dev, error_reset); + + BT_DBG("%s", hdev->name); + + if (hdev->hw_error) + hdev->hw_error(hdev, hdev->hw_error_code); + else + BT_ERR("%s hardware error 0x%2.2x", hdev->name, + hdev->hw_error_code); + + if (hci_dev_do_close(hdev)) + return; + + smp_unregister(hdev); + + hci_dev_do_open(hdev); +} + static void hci_discov_off(struct work_struct *work) { struct hci_dev *hdev; @@ -2943,6 +2963,7 @@ struct hci_dev *hci_alloc_dev(void) INIT_WORK(&hdev->cmd_work, hci_cmd_work); INIT_WORK(&hdev->tx_work, hci_tx_work); INIT_WORK(&hdev->power_on, hci_power_on); + INIT_WORK(&hdev->error_reset, hci_error_reset); INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); |