prism54 checks for dma mapping errors by comparison returned address
with zero, while pci_dma_mapping_error() should be used.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshi...@ispras.ru>
---
drivers/net/wireless/prism54/islpci_dev.c | 4 +++-
drivers/net/wireless/prism54/islpci_eth.c | 5 +++--
drivers/net/wireless/prism54/islpci_mgt.c | 4 ++--
3 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/net/wireless/prism54/islpci_dev.c
b/drivers/net/wireless/prism54/islpci_dev.c
index 931cf440ff18..84a42012aeae 100644
--- a/drivers/net/wireless/prism54/islpci_dev.c
+++ b/drivers/net/wireless/prism54/islpci_dev.c
@@ -707,7 +707,9 @@ islpci_alloc_memory(islpci_private *priv)
pci_map_single(priv->pdev, (void *) skb->data,
MAX_FRAGMENT_SIZE_RX + 2,
PCI_DMA_FROMDEVICE);
- if (!priv->pci_map_rx_address[counter]) {
+ if (pci_dma_mapping_error(priv->pdev,
+ priv->pci_map_rx_address[counter])) {
+ priv->pci_map_rx_address[counter] = 0;
/* error mapping the buffer to device
accessible memory address */
printk(KERN_ERR "failed to map skb DMA'able\n");
diff --git a/drivers/net/wireless/prism54/islpci_eth.c
b/drivers/net/wireless/prism54/islpci_eth.c
index 674658f2e6ef..d83f6332019e 100644
--- a/drivers/net/wireless/prism54/islpci_eth.c
+++ b/drivers/net/wireless/prism54/islpci_eth.c
@@ -190,7 +190,7 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device
*ndev)
pci_map_address = pci_map_single(priv->pdev,
(void *) skb->data, skb->len,
PCI_DMA_TODEVICE);
- if (unlikely(pci_map_address == 0)) {
+ if (pci_dma_mapping_error(priv->pdev, pci_map_address)) {
printk(KERN_WARNING "%s: cannot map buffer to PCI\n",
ndev->name);
goto drop_free;
@@ -448,7 +448,8 @@ islpci_eth_receive(islpci_private *priv)
pci_map_single(priv->pdev, (void *) skb->data,
MAX_FRAGMENT_SIZE_RX + 2,
PCI_DMA_FROMDEVICE);
- if (unlikely(!priv->pci_map_rx_address[index])) {
+ if (pci_dma_mapping_error(priv->pdev,
+ priv->pci_map_rx_address[index])) {
/* error mapping the buffer to device accessible memory
address */
DEBUG(SHOW_ERROR_MESSAGES,
"Error mapping DMA address\n");
diff --git a/drivers/net/wireless/prism54/islpci_mgt.c
b/drivers/net/wireless/prism54/islpci_mgt.c
index 0de14dfa68cc..53d7a1705e8e 100644
--- a/drivers/net/wireless/prism54/islpci_mgt.c
+++ b/drivers/net/wireless/prism54/islpci_mgt.c
@@ -130,7 +130,7 @@ islpci_mgmt_rx_fill(struct net_device *ndev)
buf->pci_addr = pci_map_single(priv->pdev, buf->mem,
MGMT_FRAME_SIZE,
PCI_DMA_FROMDEVICE);
- if (!buf->pci_addr) {
+ if (pci_dma_mapping_error(priv->pdev, buf->pci_addr)) {
printk(KERN_WARNING
"Failed to make memory DMA'able.\n");
return -ENOMEM;
@@ -217,7 +217,7 @@ islpci_mgt_transmit(struct net_device *ndev, int operation,
unsigned long oid,
err = -ENOMEM;
buf.pci_addr = pci_map_single(priv->pdev, buf.mem, frag_len,
PCI_DMA_TODEVICE);
- if (!buf.pci_addr) {
+ if (pci_dma_mapping_error(priv->pdev, buf.pci_addr)) {
printk(KERN_WARNING "%s: cannot map PCI memory for mgmt\n",
ndev->name);
goto error_free;
--
1.9.1
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