Bluetooth: Set LE Default PHY preferences

If the LE Set Default PHY command is supported, the indicate to the
controller that the host has no preferences for transmitter PHY or
receiver PHY selection.

Issuing this command gives the controller a clear indication that other
PHY can be selected if available.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 88a616a..43fecd5 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -794,6 +794,18 @@ static int hci_init4_req(struct hci_request *req, unsigned long opt)
 		hci_req_add(req, HCI_OP_LE_WRITE_DEF_DATA_LEN, sizeof(cp), &cp);
 	}
 
+	/* Set Default PHY parameters if command is supported */
+	if (hdev->commands[35] & 0x20) {
+		struct hci_cp_le_set_default_phy cp;
+
+		/* No transmitter PHY or receiver PHY preferences */
+		cp.all_phys = 0x03;
+		cp.tx_phys = 0;
+		cp.rx_phys = 0;
+
+		hci_req_add(req, HCI_OP_LE_SET_DEFAULT_PHY, sizeof(cp), &cp);
+	}
+
 	return 0;
 }