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Bluetooth: Check for default address of Broadcom BCM20702A0 controllers
The Broadcom BCM20702A0 USB controllers might come with the default address 00:20:70:02:A0:00 when booting up. If this happens, then warn about such address being used. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
parent
40cb098415
commit
c8abb73fb8
1 changed files with 40 additions and 2 deletions
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@ -1448,6 +1448,8 @@ static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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return 0;
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}
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#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
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static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
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{
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struct btusb_data *data = hci_get_drvdata(hdev);
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@ -1461,6 +1463,7 @@ static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
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u16 opcode;
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struct sk_buff *skb;
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struct hci_rp_read_local_version *ver;
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struct hci_rp_read_bd_addr *bda;
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long ret;
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snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
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@ -1470,8 +1473,7 @@ static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
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ret = request_firmware(&fw, fw_name, &hdev->dev);
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if (ret < 0) {
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BT_INFO("%s: BCM: patch %s not found", hdev->name,
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fw_name);
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BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
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return 0;
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}
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@ -1590,6 +1592,42 @@ static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
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ver->lmp_ver, ver->lmp_subver);
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kfree_skb(skb);
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/* Read BD Address */
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skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
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HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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ret = PTR_ERR(skb);
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BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
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hdev->name, ret);
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goto done;
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}
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if (skb->len != sizeof(*bda)) {
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BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
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hdev->name);
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kfree_skb(skb);
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ret = -EIO;
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goto done;
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}
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bda = (struct hci_rp_read_bd_addr *) skb->data;
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if (bda->status) {
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BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
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hdev->name, bda->status);
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kfree_skb(skb);
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ret = -bt_to_errno(bda->status);
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goto done;
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}
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/* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
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* with no configured address.
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*/
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if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0))
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BT_INFO("%s: BCM: using default device address (%pMR)",
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hdev->name, &bda->bdaddr);
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kfree_skb(skb);
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done:
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release_firmware(fw);
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