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SubjectRe: [PATCH v2 net] net: sonic: return NETDEV_TX_OK if failed to map buffer
From: Mao Wenan <>
Date: Thu, 5 Sep 2019 09:57:12 +0800

> 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 <>


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