Bluetooth: Add Atheros AR3012 one PID/VID supported

The new Ath3k needs to download patch and radio table,
and it keeps same PID/VID even after downloading the patch and radio
table. This patch is to use the bcdDevice (Device Release Number) to
judge whether the chip has been patched or not. The init bcdDevice
value of the chip is 0x0001, this value increases after patch and
radio table downloading.

Signed-off-by: Steven.Li <yongli@qca.qualcomm.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
index 6bacef368fab..a5854735bb2e 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -375,6 +375,11 @@ static int ath3k_probe(struct usb_interface *intf,
 
         /* load patch and sysconfig files for AR3012 */
         if (id->driver_info & BTUSB_ATH3012) {
+
+                /* New firmware with patch and sysconfig files already loaded */
+                if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
+                        return -ENODEV;
+
                 ret = ath3k_load_patch(udev);
                 if (ret < 0) {
                         BT_ERR("Loading patch file failed");