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enic: check dma_mapping_error

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This patch checks for pci_dma_mapping_error() after dma mapping the data.
If the dma mapping fails we remove the previously queued frags and return
NETDEV_TX_OK.

Reported-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Govindarajulu Varadarajan
2014-12-24 15:59:37 +05:30
committed by David S. Miller
parent 5e32066d00
commit 065df159ec
2 changed files with 106 additions and 58 deletions
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12
drivers/net/ethernet/cisco/enic/enic.h
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@@ -242,6 +242,18 @@ static inline unsigned int enic_msix_notify_intr(struct enic *enic)
return enic->rq_count + enic->wq_count + 1;
}
static inline int enic_dma_map_check(struct enic *enic, dma_addr_t dma_addr)
{
if (unlikely(pci_dma_mapping_error(enic->pdev, dma_addr))) {
net_warn_ratelimited("%s: PCI dma mapping failed!\n",
enic->netdev->name);
return -ENOMEM;
}
return 0;
}
void enic_reset_addr_lists(struct enic *enic);
int enic_sriov_enabled(struct enic *enic);
int enic_is_valid_vf(struct enic *enic, int vf);