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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
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+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);