Bluetooth: hci_qca: provide default device data

In order to simplify probe function provide default device data. This
removes the rest of if (data) checks.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/bluetooth/hci_qca.c

@@ -1874,6 +1874,11 @@ static const struct qca_device_data qca_soc_data_wcn6750 = {
 	.capabilities = QCA_CAP_WIDEBAND_SPEECH | QCA_CAP_VALID_LE_STATES,
 };
 
+static const struct qca_device_data qca_soc_data_default = {
+	.soc_type = QCA_ROME,
+	.num_vregs = 0,
+};
+
 static void qca_power_shutdown(struct hci_uart *hu)
 {
 	struct qca_serdev *qcadev;
@@ -2019,12 +2024,15 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 	int err;
 	bool power_ctrl_enabled = true;
 
+	data = device_get_match_data(&serdev->dev);
+	if (!data)
+		return -EINVAL;
+
 	qcadev = devm_kzalloc(&serdev->dev, sizeof(*qcadev), GFP_KERNEL);
 	if (!qcadev)
 		return -ENOMEM;
 
 	qcadev->serdev_hu.serdev = serdev;
-	data = device_get_match_data(&serdev->dev);
 	serdev_device_set_drvdata(serdev, qcadev);
 	device_property_read_string(&serdev->dev, "firmware-name",
 					 &qcadev->firmware_name);
@@ -2033,9 +2041,8 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 	if (!qcadev->oper_speed)
 		BT_DBG("UART will pick default operating speed");
 
-	if (data &&
-	    (qca_is_wcn399x(data->soc_type) ||
-	    qca_is_wcn6750(data->soc_type))) {
+	if ((qca_is_wcn399x(data->soc_type) ||
+	     qca_is_wcn6750(data->soc_type))) {
 		qcadev->btsoc_type = data->soc_type;
 		qcadev->bt_power = devm_kzalloc(&serdev->dev,
 						sizeof(struct qca_power),
@@ -2077,10 +2084,7 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 			return err;
 		}
 	} else {
-		if (data)
-			qcadev->btsoc_type = data->soc_type;
-		else
-			qcadev->btsoc_type = QCA_ROME;
+		qcadev->btsoc_type = data->soc_type;
 
 		qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable",
 					       GPIOD_OUT_LOW);
@@ -2309,9 +2313,9 @@ static SIMPLE_DEV_PM_OPS(qca_pm_ops, qca_suspend, qca_resume);
 
 #ifdef CONFIG_OF
 static const struct of_device_id qca_bluetooth_of_match[] = {
-	{ .compatible = "qcom,qca6174-bt" },
+	{ .compatible = "qcom,qca6174-bt", .data = &qca_soc_data_default},
 	{ .compatible = "qcom,qca6390-bt", .data = &qca_soc_data_qca6390},
-	{ .compatible = "qcom,qca9377-bt" },
+	{ .compatible = "qcom,qca9377-bt", .data = &qca_soc_data_default},
 	{ .compatible = "qcom,wcn3990-bt", .data = &qca_soc_data_wcn3990},
 	{ .compatible = "qcom,wcn3991-bt", .data = &qca_soc_data_wcn3991},
 	{ .compatible = "qcom,wcn3998-bt", .data = &qca_soc_data_wcn3998},