diff options
| author |   Alexey Khoroshilov <khoroshilov@ispras.ru> | 2015-12-26 01:42:41 +0300 |
|---|---|---|
| committer |   Kalle Valo <kvalo@codeaurora.org> | 2015-12-31 10:23:32 +0200 |
| commit | 49f2a47d913184b97ef84b2e4fd438dbee341487 (patch) | |
| tree | 0397f0834e9ea3fc761fc3db30fce2f602564c38 /drivers/net | |
| parent | wlcore/wl12xx: spi: fix NULL pointer dereference (Oops) (diff) | |
| download | linux-dev-49f2a47d913184b97ef84b2e4fd438dbee341487.tar.xz linux-dev-49f2a47d913184b97ef84b2e4fd438dbee341487.zip | |
prism54: fix checks for dma mapping errors
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 <khoroshilov@ispras.ru>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/intersil/prism54/islpci_dev.c | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/intersil/prism54/islpci_eth.c | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/intersil/prism54/islpci_mgt.c | 4 |
3 files changed, 8 insertions, 5 deletions
diff --git a/drivers/net/wireless/intersil/prism54/islpci_dev.c b/drivers/net/wireless/intersil/prism54/islpci_dev.c index 931cf440ff18..84a42012aeae 100644 --- a/drivers/net/wireless/intersil/prism54/islpci_dev.c +++ b/drivers/net/wireless/intersil/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/intersil/prism54/islpci_eth.c b/drivers/net/wireless/intersil/prism54/islpci_eth.c index 674658f2e6ef..d83f6332019e 100644 --- a/drivers/net/wireless/intersil/prism54/islpci_eth.c +++ b/drivers/net/wireless/intersil/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/intersil/prism54/islpci_mgt.c b/drivers/net/wireless/intersil/prism54/islpci_mgt.c index 0de14dfa68cc..53d7a1705e8e 100644 --- a/drivers/net/wireless/intersil/prism54/islpci_mgt.c +++ b/drivers/net/wireless/intersil/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; |