diff options
| author | Marcel Holtmann <marcel@holtmann.org> | 2014-07-02 12:38:22 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2014-07-03 17:42:56 +0200 |
| commit | c8abb73fb82b30ee736ada0f1ae50c9b4382713e (patch) | |
| tree | 7d55831318c92849baa5c229773e0826c1f61398 /drivers/bluetooth | |
| parent | 40cb0984150e118141a1b1a42f67f6d921ea8e09 (diff) | |
| download | linux-c8abb73fb82b30ee736ada0f1ae50c9b4382713e.tar.bz2 | |
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>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btusb.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 32aabea731f2..3244e311ca29 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -1448,6 +1448,8 @@ static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr) return 0; } +#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}}) + static int btusb_setup_bcm_patchram(struct hci_dev *hdev) { struct btusb_data *data = hci_get_drvdata(hdev); @@ -1461,6 +1463,7 @@ static int btusb_setup_bcm_patchram(struct hci_dev *hdev) u16 opcode; struct sk_buff *skb; struct hci_rp_read_local_version *ver; + struct hci_rp_read_bd_addr *bda; long ret; snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd", @@ -1470,8 +1473,7 @@ static int btusb_setup_bcm_patchram(struct hci_dev *hdev) ret = request_firmware(&fw, fw_name, &hdev->dev); if (ret < 0) { - BT_INFO("%s: BCM: patch %s not found", hdev->name, - fw_name); + BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name); return 0; } @@ -1590,6 +1592,42 @@ reset_fw: ver->lmp_ver, ver->lmp_subver); kfree_skb(skb); + /* Read BD Address */ + skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL, + HCI_INIT_TIMEOUT); + if (IS_ERR(skb)) { + ret = PTR_ERR(skb); + BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)", + hdev->name, ret); + goto done; + } + + if (skb->len != sizeof(*bda)) { + BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch", + hdev->name); + kfree_skb(skb); + ret = -EIO; + goto done; + } + + bda = (struct hci_rp_read_bd_addr *) skb->data; + if (bda->status) { + BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)", + hdev->name, bda->status); + kfree_skb(skb); + ret = -bt_to_errno(bda->status); + goto done; + } + + /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller + * with no configured address. + */ + if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) + BT_INFO("%s: BCM: using default device address (%pMR)", + hdev->name, &bda->bdaddr); + + kfree_skb(skb); + done: release_firmware(fw); |