net/bluetooth/hci_request.c:3350 hci_req_configure_datapath() error: uninitialized symbol 'vnd_len'.

[kernel test robot <lkp@intel.com>]

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Kiran K <kiran.k@intel.com>
CC: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   cd8c917a56f20f48748dd43d9ae3caff51d5b987
commit: 9798fbdee88a893758f1432efdfe498ae410aab8 Bluetooth: Configure codec for HFP offload use case
date:   3 months ago
:::::: branch date: 25 hours ago
:::::: commit date: 3 months ago
config: i386-randconfig-m021-20211206 (https://download.01.org/0day-ci/archive/20211208/202112080946.4eVd3xeE-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

smatch warnings:
net/bluetooth/hci_request.c:3350 hci_req_configure_datapath() error: uninitialized symbol 'vnd_len'.

vim +/vnd_len +3350 net/bluetooth/hci_request.c

9798fbdee88a89 Kiran K 2021-09-07  3335  
9798fbdee88a89 Kiran K 2021-09-07  3336  int hci_req_configure_datapath(struct hci_dev *hdev, struct bt_codec *codec)
9798fbdee88a89 Kiran K 2021-09-07  3337  {
9798fbdee88a89 Kiran K 2021-09-07  3338  	struct hci_request req;
9798fbdee88a89 Kiran K 2021-09-07  3339  	int err;
9798fbdee88a89 Kiran K 2021-09-07  3340  	__u8 vnd_len, *vnd_data = NULL;
9798fbdee88a89 Kiran K 2021-09-07  3341  	struct hci_op_configure_data_path *cmd = NULL;
9798fbdee88a89 Kiran K 2021-09-07  3342  
9798fbdee88a89 Kiran K 2021-09-07  3343  	hci_req_init(&req, hdev);
9798fbdee88a89 Kiran K 2021-09-07  3344  
9798fbdee88a89 Kiran K 2021-09-07  3345  	err = hdev->get_codec_config_data(hdev, ESCO_LINK, codec, &vnd_len,
9798fbdee88a89 Kiran K 2021-09-07  3346  					  &vnd_data);
9798fbdee88a89 Kiran K 2021-09-07  3347  	if (err < 0)
9798fbdee88a89 Kiran K 2021-09-07  3348  		goto error;
9798fbdee88a89 Kiran K 2021-09-07  3349  
9798fbdee88a89 Kiran K 2021-09-07 @3350  	cmd = kzalloc(sizeof(*cmd) + vnd_len, GFP_KERNEL);
9798fbdee88a89 Kiran K 2021-09-07  3351  	if (!cmd) {
9798fbdee88a89 Kiran K 2021-09-07  3352  		err = -ENOMEM;
9798fbdee88a89 Kiran K 2021-09-07  3353  		goto error;
9798fbdee88a89 Kiran K 2021-09-07  3354  	}
9798fbdee88a89 Kiran K 2021-09-07  3355  
9798fbdee88a89 Kiran K 2021-09-07  3356  	err = hdev->get_data_path_id(hdev, &cmd->data_path_id);
9798fbdee88a89 Kiran K 2021-09-07  3357  	if (err < 0)
9798fbdee88a89 Kiran K 2021-09-07  3358  		goto error;
9798fbdee88a89 Kiran K 2021-09-07  3359  
9798fbdee88a89 Kiran K 2021-09-07  3360  	cmd->vnd_len = vnd_len;
9798fbdee88a89 Kiran K 2021-09-07  3361  	memcpy(cmd->vnd_data, vnd_data, vnd_len);
9798fbdee88a89 Kiran K 2021-09-07  3362  
9798fbdee88a89 Kiran K 2021-09-07  3363  	cmd->direction = 0x00;
9798fbdee88a89 Kiran K 2021-09-07  3364  	hci_req_add(&req, HCI_CONFIGURE_DATA_PATH, sizeof(*cmd) + vnd_len, cmd);
9798fbdee88a89 Kiran K 2021-09-07  3365  
9798fbdee88a89 Kiran K 2021-09-07  3366  	cmd->direction = 0x01;
9798fbdee88a89 Kiran K 2021-09-07  3367  	hci_req_add(&req, HCI_CONFIGURE_DATA_PATH, sizeof(*cmd) + vnd_len, cmd);
9798fbdee88a89 Kiran K 2021-09-07  3368  
9798fbdee88a89 Kiran K 2021-09-07  3369  	err = hci_req_run(&req, config_data_path_complete);
9798fbdee88a89 Kiran K 2021-09-07  3370  error:
9798fbdee88a89 Kiran K 2021-09-07  3371  
9798fbdee88a89 Kiran K 2021-09-07  3372  	kfree(cmd);
9798fbdee88a89 Kiran K 2021-09-07  3373  	kfree(vnd_data);
9798fbdee88a89 Kiran K 2021-09-07  3374  	return err;
9798fbdee88a89 Kiran K 2021-09-07  3375  }
9798fbdee88a89 Kiran K 2021-09-07  3376  

---
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