diff options
Diffstat (limited to 'drivers/bluetooth/hci_serdev.c')
| -rw-r--r-- | drivers/bluetooth/hci_serdev.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/bluetooth/hci_serdev.c b/drivers/bluetooth/hci_serdev.c index 3b00d82d36cf..f16fd79bc02b 100644 --- a/drivers/bluetooth/hci_serdev.c +++ b/drivers/bluetooth/hci_serdev.c @@ -231,6 +231,15 @@ static int hci_uart_setup(struct hci_dev *hdev) return 0; } +/* Check if the device is wakeable */ +static bool hci_uart_wakeup(struct hci_dev *hdev) +{ + /* HCI UART devices are assumed to be wakeable by default. + * Implement wakeup callback to override this behavior. + */ + return true; +} + /** hci_uart_write_wakeup - transmit buffer wakeup * @serdev: serial device * @@ -301,9 +310,12 @@ int hci_uart_register_device(struct hci_uart *hu, serdev_device_set_client_ops(hu->serdev, &hci_serdev_client_ops); + if (percpu_init_rwsem(&hu->proto_lock)) + return -ENOMEM; + err = serdev_device_open(hu->serdev); if (err) - return err; + goto err_rwsem; err = p->open(hu); if (err) @@ -327,7 +339,6 @@ int hci_uart_register_device(struct hci_uart *hu, INIT_WORK(&hu->init_ready, hci_uart_init_work); INIT_WORK(&hu->write_work, hci_uart_write_work); - percpu_init_rwsem(&hu->proto_lock); /* Only when vendor specific setup callback is provided, consider * the manufacturer information valid. This avoids filling in the @@ -341,6 +352,8 @@ int hci_uart_register_device(struct hci_uart *hu, hdev->flush = hci_uart_flush; hdev->send = hci_uart_send_frame; hdev->setup = hci_uart_setup; + if (!hdev->wakeup) + hdev->wakeup = hci_uart_wakeup; SET_HCIDEV_DEV(hdev, &hu->serdev->dev); if (test_bit(HCI_UART_NO_SUSPEND_NOTIFIER, &hu->flags)) @@ -377,6 +390,8 @@ err_alloc: p->close(hu); err_open: serdev_device_close(hu->serdev); +err_rwsem: + percpu_free_rwsem(&hu->proto_lock); return err; } EXPORT_SYMBOL_GPL(hci_uart_register_device); @@ -398,5 +413,6 @@ void hci_uart_unregister_device(struct hci_uart *hu) clear_bit(HCI_UART_PROTO_READY, &hu->flags); serdev_device_close(hu->serdev); } + percpu_free_rwsem(&hu->proto_lock); } EXPORT_SYMBOL_GPL(hci_uart_unregister_device); |