NETDEV_TX_BUSY really should only be used by drivers that call
netif_tx_stop_queue() at the wrong moment. If dma_map_single() is
failed to map tx DMA buffer, it might trigger an infinite loop.
This patch use NETDEV_TX_OK instead of NETDEV_TX_BUSY, and change
printk to pr_err_ratelimited.
Fixes: d9fb9f384292 ("*sonic/natsemi/ns83829: Move the National Semi-conductor drivers")
Signed-off-by: Mao Wenan <maowenan@xxxxxxxxxx>
---
v2: change subject and description of patch, use NETDEV_TX_OK instead of NETDEV_TX_BUSY.
drivers/net/ethernet/natsemi/sonic.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/natsemi/sonic.c b/drivers/net/ethernet/natsemi/sonic.c
index d0a01e8f000a..18fd62fbfb64 100644
--- a/drivers/net/ethernet/natsemi/sonic.c
+++ b/drivers/net/ethernet/natsemi/sonic.c
@@ -232,9 +232,9 @@ static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
laddr = dma_map_single(lp->device, skb->data, length, DMA_TO_DEVICE);
if (!laddr) {
- printk(KERN_ERR "%s: failed to map tx DMA buffer.\n", dev->name);
+ pr_err_ratelimited("%s: failed to map tx DMA buffer.\n", dev->name);
dev_kfree_skb(skb);
- return NETDEV_TX_BUSY;
+ return NETDEV_TX_OK;
}
sonic_tda_put(dev, entry, SONIC_TD_STATUS, 0); /* clear status */
--
2.20.1
