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[net-next,5/9] net: r6040: Check for skb->xmit_more

Message ID 1467668169-31547-6-git-send-email-f.fainelli@gmail.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Florian Fainelli July 4, 2016, 9:36 p.m. UTC 
Kick the transmission only if this is the last SKB to transmit or the
queue is not already stopped.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/ethernet/rdc/r6040.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/net/ethernet/rdc/r6040.c b/drivers/net/ethernet/rdc/r6040.c
index 4bf78f18a937..96b2d639c3c1 100644
--- a/drivers/net/ethernet/rdc/r6040.c
+++ b/drivers/net/ethernet/rdc/r6040.c
@@ -840,7 +840,8 @@  static netdev_tx_t r6040_start_xmit(struct sk_buff *skb,
 	skb_tx_timestamp(skb);
 
 	/* Trigger the MAC to check the TX descriptor */
-	iowrite16(TM2TX, ioaddr + MTPR);
+	if (!skb->xmit_more || netif_queue_stopped(dev))
+		iowrite16(TM2TX, ioaddr + MTPR);
 	lp->tx_insert_ptr = descptr->vndescp;
 
 	/* If no tx resource, stop */