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Bluetooth: Check for default address of Broadcom BCM20702A0 controllers

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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:
Marcel Holtmann 2014-07-02 12:38:22 +02:00
parent 40cb098415
commit c8abb73fb8
1 changed files with 40 additions and 2 deletions
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42
drivers/bluetooth/btusb.c
View File

@ -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 @@ static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
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);