From: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Date: Thu, 19 Jan 2017 16:58:26 +0000 (+0200)
Subject: net: ethernet: ti: cpsw: don't duplicate common res in rx handler
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fe734d0aa9e120a48999885355f08a99fcf45c77;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

net: ethernet: ti: cpsw: don't duplicate common res in rx handler

No need to duplicate the same function in rx handler to get info
if any interface is running.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index c681d39419b0..1f14afdddb75 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -671,6 +671,18 @@ static void cpsw_intr_disable(struct cpsw_common *cpsw)
 	return;
 }
 
+static int cpsw_get_usage_count(struct cpsw_common *cpsw)
+{
+	u32 i;
+	u32 usage_count = 0;
+
+	for (i = 0; i < cpsw->data.slaves; i++)
+		if (netif_running(cpsw->slaves[i].ndev))
+			usage_count++;
+
+	return usage_count;
+}
+
 static void cpsw_tx_handler(void *token, int len, int status)
 {
 	struct netdev_queue	*txq;
@@ -703,18 +715,10 @@ static void cpsw_rx_handler(void *token, int len, int status)
 	cpsw_dual_emac_src_port_detect(cpsw, status, ndev, skb);
 
 	if (unlikely(status < 0) || unlikely(!netif_running(ndev))) {
-		bool ndev_status = false;
-		struct cpsw_slave *slave = cpsw->slaves;
-		int n;
-
-		if (cpsw->data.dual_emac) {
-			/* In dual emac mode check for all interfaces */
-			for (n = cpsw->data.slaves; n; n--, slave++)
-				if (netif_running(slave->ndev))
-					ndev_status = true;
-		}
-
-		if (ndev_status && (status >= 0)) {
+		/* In dual emac mode check for all interfaces */
+		if (cpsw->data.dual_emac &&
+		    cpsw_get_usage_count(cpsw) &&
+		    (status >= 0)) {
 			/* The packet received is for the interface which
 			 * is already down and the other interface is up
 			 * and running, instead of freeing which results
@@ -1234,18 +1238,6 @@ static void cpsw_get_ethtool_stats(struct net_device *ndev,
 	}
 }
 
-static int cpsw_get_usage_count(struct cpsw_common *cpsw)
-{
-	u32 i;
-	u32 usage_count = 0;
-
-	for (i = 0; i < cpsw->data.slaves; i++)
-		if (netif_running(cpsw->slaves[i].ndev))
-			usage_count++;
-
-	return usage_count;
-}
-
 static inline int cpsw_tx_packet_submit(struct cpsw_priv *priv,
 					struct sk_buff *skb,
 					struct cpdma_chan *txch)