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path: root/drivers/net/wireless/rtl818x/rtl8180/dev.c
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Diffstat (limited to 'drivers/net/wireless/rtl818x/rtl8180/dev.c')
-rw-r--r--drivers/net/wireless/rtl818x/rtl8180/dev.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/net/wireless/rtl818x/rtl8180/dev.c b/drivers/net/wireless/rtl818x/rtl8180/dev.c
index 8ec17aad0e5..3867d1470b3 100644
--- a/drivers/net/wireless/rtl818x/rtl8180/dev.c
+++ b/drivers/net/wireless/rtl818x/rtl8180/dev.c
@@ -107,6 +107,7 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
struct rtl8180_priv *priv = dev->priv;
unsigned int count = 32;
u8 signal, agc, sq;
+ dma_addr_t mapping;
while (count--) {
struct rtl8180_rx_desc *entry = &priv->rx_ring[priv->rx_idx];
@@ -128,6 +129,17 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
if (unlikely(!new_skb))
goto done;
+ mapping = pci_map_single(priv->pdev,
+ skb_tail_pointer(new_skb),
+ MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
+
+ if (pci_dma_mapping_error(priv->pdev, mapping)) {
+ kfree_skb(new_skb);
+ dev_err(&priv->pdev->dev, "RX DMA map error\n");
+
+ goto done;
+ }
+
pci_unmap_single(priv->pdev,
*((dma_addr_t *)skb->cb),
MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
@@ -158,9 +170,7 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
skb = new_skb;
priv->rx_buf[priv->rx_idx] = skb;
- *((dma_addr_t *) skb->cb) =
- pci_map_single(priv->pdev, skb_tail_pointer(skb),
- MAX_RX_SIZE, PCI_DMA_FROMDEVICE);
+ *((dma_addr_t *) skb->cb) = mapping;
}
done:
@@ -266,6 +276,13 @@ static void rtl8180_tx(struct ieee80211_hw *dev,
mapping = pci_map_single(priv->pdev, skb->data,
skb->len, PCI_DMA_TODEVICE);
+ if (pci_dma_mapping_error(priv->pdev, mapping)) {
+ kfree_skb(skb);
+ dev_err(&priv->pdev->dev, "TX DMA mapping error\n");
+ return;
+
+ }
+
tx_flags = RTL818X_TX_DESC_FLAG_OWN | RTL818X_TX_DESC_FLAG_FS |
RTL818X_TX_DESC_FLAG_LS |
(ieee80211_get_tx_rate(dev, info)->hw_value << 24) |