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[net-next,V3,11/16] net: fec: clear cbd_sc after transmission to help with debugging

Message ID 1459909562-22865-12-git-send-email-troy.kisky@boundarydevices.com (mailing list archive)
State New, archived
Headers show

Commit Message

Troy Kisky April 6, 2016, 2:25 a.m. UTC 
When the tx queue is dumped, it is easier to see that this
entry is idle if cbd_sc is cleared after transmission.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

---
v3: change commit message
---
 drivers/net/ethernet/freescale/fec_main.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index a2a9dca..f96ea97 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1164,6 +1164,8 @@  static void fec_txq(struct net_device *ndev, struct fec_enet_priv_tx_q *txq)
 			}
 			break;
 		}
+		bdp->cbd_sc = cpu_to_fec16((bdp == txq->bd.last) ?
+					   BD_SC_WRAP : 0);
 
 		index = fec_enet_get_bd_index(bdp, &txq->bd);