[PATCH] spidernet: Use pci_dma_mapping_error()

A driver shouldn't compare to DMA_ERROR_CODE directly, use
pci_dma_mapping_error() instead.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c
index cc240adb72690304c58b129abcf1fbef0af4b128..1397fc55cf688c345899ea19a4f12271d0662287 100644 (file)
--- a/drivers/net/spider_net.c
+++ b/drivers/net/spider_net.c
@@ -317,7 +317,7 @@ spider_net_init_chain(struct spider_net_card *card,
                                     SPIDER_NET_DESCR_SIZE,
                                     direction);
 
-               if (buf == DMA_ERROR_CODE)
+               if (pci_dma_mapping_error(buf))
                        goto iommu_error;
 
                descr->bus_addr = buf;
@@ -420,7 +420,7 @@ spider_net_prepare_rx_descr(struct spider_net_card *card,
        buf = pci_map_single(card->pdev, descr->skb->data,
                        SPIDER_NET_MAX_FRAME, PCI_DMA_FROMDEVICE);
        descr->buf_addr = buf;
-       if (buf == DMA_ERROR_CODE) {
+       if (pci_dma_mapping_error(buf)) {
                dev_kfree_skb_any(descr->skb);
                if (netif_msg_rx_err(card) && net_ratelimit())
                        pr_err("Could not iommu-map rx buffer\n");
@@ -649,7 +649,7 @@ spider_net_prepare_tx_descr(struct spider_net_card *card,
        dma_addr_t buf;
 
        buf = pci_map_single(card->pdev, skb->data, skb->len, PCI_DMA_TODEVICE);
-       if (buf == DMA_ERROR_CODE) {
+       if (pci_dma_mapping_error(buf)) {
                if (netif_msg_tx_err(card) && net_ratelimit())
                        pr_err("could not iommu-map packet (%p, %i). "
                                  "Dropping packet\n", skb->data, skb->len);