Commit d827d86b authored by Stanislaw Gruszka's avatar Stanislaw Gruszka Committed by David S. Miller
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r8169: print errors when dma mapping fail 



If dma mapping fail we are dropping packages or fail to open device.
But exact reason of drop/fail stays unknow for a user, so print errors.

Signed-off-by: default avatarStanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent fccec10b

drivers/net/r8169.c

+13 −3
Original line number Diff line number Diff line
@@ -3974,8 +3974,11 @@ static struct sk_buff *rtl8169_alloc_rx_data(struct rtl8169_private *tp, 


	mapping = dma_map_single(d, rtl8169_align(data), rx_buf_sz,

				 DMA_FROM_DEVICE);

	if (unlikely(dma_mapping_error(d, mapping)))

	if (unlikely(dma_mapping_error(d, mapping))) {

		if (net_ratelimit())

			netif_err(tp, drv, tp->dev, "Failed to map RX DMA!\n");

		goto err_out;

	}



	rtl8169_map_to_asic(desc, mapping, rx_buf_sz);

	return data;
@@ -4203,8 +4206,12 @@ static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb, 
		len = frag->size;

		addr = ((void *) page_address(frag->page)) + frag->page_offset;

		mapping = dma_map_single(d, addr, len, DMA_TO_DEVICE);

		if (unlikely(dma_mapping_error(d, mapping)))

		if (unlikely(dma_mapping_error(d, mapping))) {

			if (net_ratelimit())

				netif_err(tp, drv, tp->dev,

					  "Failed to map TX fragments DMA!\n");

			goto err_out;

		}



		/* anti gcc 2.95.3 bugware (sic) */

		status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
@@ -4270,8 +4277,11 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, 


	len = skb_headlen(skb);

	mapping = dma_map_single(d, skb->data, len, DMA_TO_DEVICE);

	if (unlikely(dma_mapping_error(d, mapping)))

	if (unlikely(dma_mapping_error(d, mapping))) {

		if (net_ratelimit())

			netif_err(tp, drv, dev, "Failed to map TX DMA!\n");

		goto err_dma_0;

	}



	tp->tx_skb[entry].len = len;

	txd->addr = cpu_to_le64(mapping);