Bluetooth: Add opcode to error message

Sometimes HCI command sending timeouts and gives error message without
specifying which command causes error. Patch makes sure that opcode
is printed to help debugging.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index e91bf7e15666420466a5b67e715ea0cb0442bb3e..88858963ec21b4cf4cce14bb2288dbd0129f8a47 100644 (file)
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1366,11 +1366,19 @@ int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr)
 }
 
 /* HCI command timer function */
-static void hci_cmd_timer(unsigned long arg)
+static void hci_cmd_timeout(unsigned long arg)
 {
        struct hci_dev *hdev = (void *) arg;
 
-       BT_ERR("%s command tx timeout", hdev->name);
+       if (hdev->sent_cmd) {
+               struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data;
+               u16 opcode = __le16_to_cpu(sent->opcode);
+
+               BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode);
+       } else {
+               BT_ERR("%s command tx timeout", hdev->name);
+       }
+
        atomic_set(&hdev->cmd_cnt, 1);
        queue_work(hdev->workqueue, &hdev->cmd_work);
 }
@@ -1668,7 +1676,7 @@ struct hci_dev *hci_alloc_dev(void)
 
        init_waitqueue_head(&hdev->req_wait_q);
 
-       setup_timer(&hdev->cmd_timer, hci_cmd_timer, (unsigned long) hdev);
+       setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev);
 
        hci_init_sysfs(hdev);
        discovery_init(hdev);