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@xxxxxxxxxxxx>
---
drivers/bluetooth/btusb.c | 42 ++++++++++++++++++++++++++++++++++++++++--
1 file 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);
--
1.9.3
--
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