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From:   Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
To:     grygorii.strashko@ti.com, hawk@kernel.org, davem@davemloft.net
Cc:     ast@kernel.org, linux-kernel@vger.kernel.org,
        linux-omap@vger.kernel.org, xdp-newbies@vger.kernel.org,
        ilias.apalodimas@linaro.org, netdev@vger.kernel.org,
        daniel@iogearbox.net, jakub.kicinski@netronome.com,
        john.fastabend@gmail.com,
        Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Subject: [PATCH v2 net-next 4/7] net: ethernet: ti: cpsw_ethtool: simplify slave loops
Date:   Thu, 30 May 2019 21:20:36 +0300
Message-Id: <20190530182039.4945-5-ivan.khoronzhuk@linaro.org>
In-Reply-To: <20190530182039.4945-1-ivan.khoronzhuk@linaro.org>
References: <20190530182039.4945-1-ivan.khoronzhuk@linaro.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Only for consistency reasons, do it like in main cpsw.c module
and use ndev reference but not by means of slave.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
---
 drivers/net/ethernet/ti/cpsw_ethtool.c | 40 ++++++++++++++------------
 1 file changed, 21 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/ti/cpsw_ethtool.c b/drivers/net/ethernet/ti/cpsw_ethtool.c
index a4a7ec0d2531..c260bb32aacf 100644
--- a/drivers/net/ethernet/ti/cpsw_ethtool.c
+++ b/drivers/net/ethernet/ti/cpsw_ethtool.c
@@ -458,7 +458,6 @@ int cpsw_nway_reset(struct net_device *ndev)
 static void cpsw_suspend_data_pass(struct net_device *ndev)
 {
 	struct cpsw_common *cpsw = ndev_to_cpsw(ndev);
-	struct cpsw_slave *slave;
 	int i;
 
 	/* Disable NAPI scheduling */
@@ -467,12 +466,13 @@ static void cpsw_suspend_data_pass(struct net_device *ndev)
 	/* Stop all transmit queues for every network device.
 	 * Disable re-using rx descriptors with dormant_on.
 	 */
-	for (i = cpsw->data.slaves, slave = cpsw->slaves; i; i--, slave++) {
-		if (!(slave->ndev && netif_running(slave->ndev)))
+	for (i = 0; i < cpsw->data.slaves; i++) {
+		ndev = cpsw->slaves[i].ndev;
+		if (!(ndev && netif_running(ndev)))
 			continue;
 
-		netif_tx_stop_all_queues(slave->ndev);
-		netif_dormant_on(slave->ndev);
+		netif_tx_stop_all_queues(ndev);
+		netif_dormant_on(ndev);
 	}
 
 	/* Handle rest of tx packets and stop cpdma channels */
@@ -483,13 +483,14 @@ static int cpsw_resume_data_pass(struct net_device *ndev)
 {
 	struct cpsw_priv *priv = netdev_priv(ndev);
 	struct cpsw_common *cpsw = priv->cpsw;
-	struct cpsw_slave *slave;
 	int i, ret;
 
 	/* Allow rx packets handling */
-	for (i = cpsw->data.slaves, slave = cpsw->slaves; i; i--, slave++)
-		if (slave->ndev && netif_running(slave->ndev))
-			netif_dormant_off(slave->ndev);
+	for (i = 0; i < cpsw->data.slaves; i++) {
+		ndev = cpsw->slaves[i].ndev;
+		if (ndev && netif_running(ndev))
+			netif_dormant_off(ndev);
+	}
 
 	/* After this receive is started */
 	if (cpsw->usage_count) {
@@ -502,9 +503,11 @@ static int cpsw_resume_data_pass(struct net_device *ndev)
 	}
 
 	/* Resume transmit for every affected interface */
-	for (i = cpsw->data.slaves, slave = cpsw->slaves; i; i--, slave++)
-		if (slave->ndev && netif_running(slave->ndev))
-			netif_tx_start_all_queues(slave->ndev);
+	for (i = 0; i < cpsw->data.slaves; i++) {
+		ndev = cpsw->slaves[i].ndev;
+		if (ndev && netif_running(ndev))
+			netif_tx_start_all_queues(ndev);
+	}
 
 	return 0;
 }
@@ -587,7 +590,6 @@ int cpsw_set_channels_common(struct net_device *ndev,
 {
 	struct cpsw_priv *priv = netdev_priv(ndev);
 	struct cpsw_common *cpsw = priv->cpsw;
-	struct cpsw_slave *slave;
 	int i, ret;
 
 	ret = cpsw_check_ch_settings(cpsw, chs);
@@ -604,20 +606,20 @@ int cpsw_set_channels_common(struct net_device *ndev,
 	if (ret)
 		goto err;
 
-	for (i = cpsw->data.slaves, slave = cpsw->slaves; i; i--, slave++) {
-		if (!(slave->ndev && netif_running(slave->ndev)))
+	for (i = 0; i < cpsw->data.slaves; i++) {
+		struct net_device *ndev = cpsw->slaves[i].ndev;
+
+		if (!(ndev && netif_running(ndev)))
 			continue;
 
 		/* Inform stack about new count of queues */
-		ret = netif_set_real_num_tx_queues(slave->ndev,
-						   cpsw->tx_ch_num);
+		ret = netif_set_real_num_tx_queues(ndev, cpsw->tx_ch_num);
 		if (ret) {
 			dev_err(priv->dev, "cannot set real number of tx queues\n");
 			goto err;
 		}
 
-		ret = netif_set_real_num_rx_queues(slave->ndev,
-						   cpsw->rx_ch_num);
+		ret = netif_set_real_num_rx_queues(ndev, cpsw->rx_ch_num);
 		if (ret) {
 			dev_err(priv->dev, "cannot set real number of rx queues\n");
 			goto err;
-- 
2.17.1