From: Mattias Barthel <mattias.barthel@atlascopco.com>
Activate workaround also in fec_enet_txq_submit_skb()
when TSO is not enbabled.
Errata: ERR007885
Symptoms: NETDEV WATCHDOG: eth0 (fec): transmit queue 0 timed out
related 37d6017b84f7:
("net: fec: Workaround for imx6sx enet tx hang when enable three queues")
Fixes: 53bb20d1faba ("net: fec: add variable reg_desc_active to speed things up")
Signed-off-by: Mattias Barthel <mattias.barthel@atlascopco.com>
---
drivers/net/ethernet/freescale/fec_main.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index a86cfebedaa8..17e9bddb9ddd 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -714,7 +714,12 @@ static int fec_enet_txq_submit_skb(struct fec_enet_priv_tx_q *txq,
txq->bd.cur = bdp;
/* Trigger transmission start */
- writel(0, txq->bd.reg_desc_active);
+ if (!(fep->quirks & FEC_QUIRK_ERR007885) ||
+ !readl(txq->bd.reg_desc_active) ||
+ !readl(txq->bd.reg_desc_active) ||
+ !readl(txq->bd.reg_desc_active) ||
+ !readl(txq->bd.reg_desc_active))
+ writel(0, txq->bd.reg_desc_active);
return 0;
}
--
2.43.0