diff options
Diffstat (limited to 'net/bluetooth/hci_sync.c')
| -rw-r--r-- | net/bluetooth/hci_sync.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index 647a8ce54062..804cde43b4e0 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -629,6 +629,7 @@ void hci_cmd_sync_init(struct hci_dev *hdev) INIT_WORK(&hdev->cmd_sync_work, hci_cmd_sync_work); INIT_LIST_HEAD(&hdev->cmd_sync_work_list); mutex_init(&hdev->cmd_sync_work_lock); + mutex_init(&hdev->unregister_lock); INIT_WORK(&hdev->cmd_sync_cancel_work, hci_cmd_sync_cancel_work); INIT_WORK(&hdev->reenable_adv_work, reenable_adv); @@ -692,14 +693,19 @@ int hci_cmd_sync_submit(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, void *data, hci_cmd_sync_work_destroy_t destroy) { struct hci_cmd_sync_work_entry *entry; + int err = 0; - if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) - return -ENODEV; + mutex_lock(&hdev->unregister_lock); + if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) { + err = -ENODEV; + goto unlock; + } entry = kmalloc(sizeof(*entry), GFP_KERNEL); - if (!entry) - return -ENOMEM; - + if (!entry) { + err = -ENOMEM; + goto unlock; + } entry->func = func; entry->data = data; entry->destroy = destroy; @@ -710,7 +716,9 @@ int hci_cmd_sync_submit(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, queue_work(hdev->req_workqueue, &hdev->cmd_sync_work); - return 0; +unlock: + mutex_unlock(&hdev->unregister_lock); + return err; } EXPORT_SYMBOL(hci_cmd_sync_submit); @@ -4543,6 +4551,9 @@ static int hci_init_sync(struct hci_dev *hdev) !hci_dev_test_flag(hdev, HCI_CONFIG)) return 0; + if (hci_dev_test_and_set_flag(hdev, HCI_DEBUGFS_CREATED)) + return 0; + hci_debugfs_create_common(hdev); if (lmp_bredr_capable(hdev)) |