Re: [PATCH] forcedeth: Fix WARNINGS that result when DMA mapping is not checked

From: David Miller <davem@davemloft.net>
Date: 2012-12-27 21:32:13
Also in: linux-wireless, lkml

From: Eric Dumazet <redacted>
Date: Thu, 27 Dec 2012 13:03:29 -0800

On Thu, 2012-12-27 at 14:38 -0600, Larry Finger wrote:

quoted

On 12/27/2012 02:05 PM, Eric Dumazet wrote:

quoted

On Thu, 2012-12-27 at 13:42 -0600, Larry Finger wrote:

quoted

+		if (pci_dma_mapping_error(np->pci_dev,
+					  np->put_tx_ctx->dma))
+			return NETDEV_TX_BUSY;

Really this is not going to work very well : caller will call this in a
loop.

Any suggestions on what value should be returned, or does the caller need to be 
modified?

NETDEV_TX_BUSY is really obsolete

Documentation/networking/driver.txt

In case of mapping error, I would drop the packet.

Agreed.