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Merge branch '3c59x-dma-fixes'

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Neil Horman says:

====================
3c59x: Fix dma map/unmap imbalances

	recent enhancements to libdma revealed a few minor bugs in 3c59x, in
which dma ranges were mapped as singles and unmaped as pages, or vice versa.
These patches fix those up.  Tested by myself with success
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-01-13 14:55:18 -05:00
parent 3b780bed31 6e144419e4
commit e752991a2e
1 changed files with 7 additions and 2 deletions
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9
drivers/net/ethernet/3com/3c59x.c
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@ -2459,8 +2459,13 @@ boomerang_interrupt(int irq, void *dev_id)
struct sk_buff *skb = vp->tx_skbuff[entry];
#if DO_ZEROCOPY
int i;
for (i=0; i<=skb_shinfo(skb)->nr_frags; i++)
pci_unmap_single(VORTEX_PCI(vp),
pci_unmap_single(VORTEX_PCI(vp),
le32_to_cpu(vp->tx_ring[entry].frag[0].addr),
le32_to_cpu(vp->tx_ring[entry].frag[0].length),
PCI_DMA_TODEVICE);
for (i=1; i<=skb_shinfo(skb)->nr_frags; i++)
pci_unmap_page(VORTEX_PCI(vp),
le32_to_cpu(vp->tx_ring[entry].frag[i].addr),
le32_to_cpu(vp->tx_ring[entry].frag[i].length)&0xFFF,
PCI_DMA_TODEVICE);