From: Ferry Toth ftoth@exalondelft.nl
[ Upstream commit 5035726128cd2e3813ee44deedb9898509edb232 ]
The BCM43341B has the default MAC address 43:34:1B:00:1F:AC if none is given. This address was found when enabling Bluetooth on multiple Intel Edison modules. It also contains the sequence 43341B, the name the chip identifies itself as. Using the same BD_ADDR is problematic when having multiple Intel Edison modules in each others range. The default address also has the LAA (locally administered address) bit set which prevents a BNEP device from being created, needed for BT tethering.
Add this to the list of black listed default MAC addresses and let the user configure a valid one using f.i. `btmgmt -i hci0 public-addr xx:xx:xx:xx:xx:xx`
Suggested-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Ferry Toth ftoth@exalondelft.nl Reviewed-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Marcel Holtmann marcel@holtmann.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/bluetooth/btbcm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c index d5d6e6e5da3bf..62d3aa2b26f60 100644 --- a/drivers/bluetooth/btbcm.c +++ b/drivers/bluetooth/btbcm.c @@ -37,6 +37,7 @@ #define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}}) #define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}}) #define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}}) +#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
int btbcm_check_bdaddr(struct hci_dev *hdev) { @@ -82,7 +83,8 @@ int btbcm_check_bdaddr(struct hci_dev *hdev) !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) || !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) || !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) || - !bacmp(&bda->bdaddr, BDADDR_BCM43430A0)) { + !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) || + !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) { bt_dev_info(hdev, "BCM: Using default device address (%pMR)", &bda->bdaddr); set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);