staging: fsl-dpaa2/eth: Split function

Since setup_dpni() became a bit too long, move the buffer layout
configuration to a separate function.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c

@@ -1776,42 +1776,12 @@ static void free_dpbp(struct dpaa2_eth_priv *priv)
 	fsl_mc_object_free(priv->dpbp_dev);
 }
 
-/* Configure the DPNI object this interface is associated with */
-static int setup_dpni(struct fsl_mc_device *ls_dev)
+static int set_buffer_layout(struct dpaa2_eth_priv *priv)
 {
-	struct device *dev = &ls_dev->dev;
-	struct dpaa2_eth_priv *priv;
-	struct net_device *net_dev;
+	struct device *dev = priv->net_dev->dev.parent;
 	struct dpni_buffer_layout buf_layout = {0};
 	int err;
 
-	net_dev = dev_get_drvdata(dev);
-	priv = netdev_priv(net_dev);
-
-	/* get a handle for the DPNI object */
-	err = dpni_open(priv->mc_io, 0, ls_dev->obj_desc.id, &priv->mc_token);
-	if (err) {
-		dev_err(dev, "dpni_open() failed\n");
-		return err;
-	}
-
-	ls_dev->mc_io = priv->mc_io;
-	ls_dev->mc_handle = priv->mc_token;
-
-	err = dpni_reset(priv->mc_io, 0, priv->mc_token);
-	if (err) {
-		dev_err(dev, "dpni_reset() failed\n");
-		goto close;
-	}
-
-	err = dpni_get_attributes(priv->mc_io, 0, priv->mc_token,
-				  &priv->dpni_attrs);
-	if (err) {
-		dev_err(dev, "dpni_get_attributes() failed (err=%d)\n", err);
-		goto close;
-	}
-
-	/* Configure buffer layouts */
 	/* rx buffer */
 	buf_layout.pass_parser_result = true;
 	buf_layout.pass_frame_status = true;
@@ -1825,7 +1795,7 @@ static int setup_dpni(struct fsl_mc_device *ls_dev)
 				     DPNI_QUEUE_RX, &buf_layout);
 	if (err) {
 		dev_err(dev, "dpni_set_buffer_layout(RX) failed\n");
-		goto close;
+		return err;
 	}
 
 	/* tx buffer */
@@ -1835,7 +1805,7 @@ static int setup_dpni(struct fsl_mc_device *ls_dev)
 				     DPNI_QUEUE_TX, &buf_layout);
 	if (err) {
 		dev_err(dev, "dpni_set_buffer_layout(TX) failed\n");
-		goto close;
+		return err;
 	}
 
 	/* tx-confirm buffer */
@@ -1844,9 +1814,50 @@ static int setup_dpni(struct fsl_mc_device *ls_dev)
 				     DPNI_QUEUE_TX_CONFIRM, &buf_layout);
 	if (err) {
 		dev_err(dev, "dpni_set_buffer_layout(TX_CONF) failed\n");
+		return err;
+	}
+
+	return 0;
+}
+
+/* Configure the DPNI object this interface is associated with */
+static int setup_dpni(struct fsl_mc_device *ls_dev)
+{
+	struct device *dev = &ls_dev->dev;
+	struct dpaa2_eth_priv *priv;
+	struct net_device *net_dev;
+	int err;
+
+	net_dev = dev_get_drvdata(dev);
+	priv = netdev_priv(net_dev);
+
+	/* get a handle for the DPNI object */
+	err = dpni_open(priv->mc_io, 0, ls_dev->obj_desc.id, &priv->mc_token);
+	if (err) {
+		dev_err(dev, "dpni_open() failed\n");
+		return err;
+	}
+
+	ls_dev->mc_io = priv->mc_io;
+	ls_dev->mc_handle = priv->mc_token;
+
+	err = dpni_reset(priv->mc_io, 0, priv->mc_token);
+	if (err) {
+		dev_err(dev, "dpni_reset() failed\n");
 		goto close;
 	}
 
+	err = dpni_get_attributes(priv->mc_io, 0, priv->mc_token,
+				  &priv->dpni_attrs);
+	if (err) {
+		dev_err(dev, "dpni_get_attributes() failed (err=%d)\n", err);
+		goto close;
+	}
+
+	err = set_buffer_layout(priv);
+	if (err)
+		goto close;
+
 	/* Now that we've set our tx buffer layout, retrieve the minimum
 	 * required tx data offset.
 	 */