netdev - [PATCH net-next 18/40] net: fec: clear cbd_sc after transmission to help with debugging

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Date:	Thu, 28 Jan 2016 14:25:42 -0700
From:	Troy Kisky <troy.kisky@...ndarydevices.com>
To:	netdev@...r.kernel.org, davem@...emloft.net, B38611@...escale.com
Cc:	fabio.estevam@...escale.com, l.stach@...gutronix.de,
	andrew@...n.ch, tremyfr@...il.com, linux@....linux.org.uk,
	linux-arm-kernel@...ts.infradead.org, laci@...ndarydevices.com,
	shawnguo@...nel.org, Troy Kisky <troy.kisky@...ndarydevices.com>
Subject: [PATCH net-next 18/40] net: fec: clear cbd_sc after transmission to help with debugging

When the tx queue is dumped, it is easier to see that this
entry is idle.

Signed-off-by: Troy Kisky <troy.kisky@...ndarydevices.com>
---
 drivers/net/ethernet/freescale/fec_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index fcbbf0d..1759705 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1161,6 +1161,7 @@ static void fec_txq(struct net_device *ndev, struct fec_enet_private *fep,
 			}
 			break;
 		}
+		bdp->cbd_sc = (bdp == txq->bd.last) ? BD_SC_WRAP : 0;
 
 		index = fec_enet_get_bd_index(bdp, &txq->bd);
 
-- 
2.5.0