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staging: vt6655: dead code tx path remove dma_unmap_single
When pTDInfo->skb_dma not equal to pTDInfo->buf_dma, pTDInfo->skb_dma equals zero. as mentioned in comment pre-allocated buf_dma can't be unmapped so remove dead code. Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 0 additions and 14 deletions
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@ -754,10 +754,6 @@ static void device_free_td0_ring(struct vnt_private *pDevice)
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PSTxDesc pDesc = &(pDevice->apTD0Rings[i]);
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PDEVICE_TD_INFO pTDInfo = pDesc->pTDInfo;
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if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma))
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dma_unmap_single(&pDevice->pcid->dev, pTDInfo->skb_dma,
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pTDInfo->skb->len, DMA_TO_DEVICE);
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dev_kfree_skb(pTDInfo->skb);
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kfree(pDesc->pTDInfo);
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}
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@ -771,10 +767,6 @@ static void device_free_td1_ring(struct vnt_private *pDevice)
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PSTxDesc pDesc = &(pDevice->apTD1Rings[i]);
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PDEVICE_TD_INFO pTDInfo = pDesc->pTDInfo;
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if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma))
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dma_unmap_single(&pDevice->pcid->dev, pTDInfo->skb_dma,
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pTDInfo->skb->len, DMA_TO_DEVICE);
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dev_kfree_skb(pTDInfo->skb);
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kfree(pDesc->pTDInfo);
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}
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@ -975,12 +967,6 @@ static void device_free_tx_buf(struct vnt_private *pDevice, PSTxDesc pDesc)
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PDEVICE_TD_INFO pTDInfo = pDesc->pTDInfo;
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struct sk_buff *skb = pTDInfo->skb;
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/* pre-allocated buf_dma can't be unmapped. */
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if (pTDInfo->skb_dma && (pTDInfo->skb_dma != pTDInfo->buf_dma)) {
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dma_unmap_single(&pDevice->pcid->dev, pTDInfo->skb_dma,
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skb->len, DMA_TO_DEVICE);
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}
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if (skb)
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ieee80211_tx_status_irqsafe(pDevice->hw, skb);
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