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wil6210: Optimize Tx completion

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No need to modify HW descriptor, as it will be re-initialized on Tx.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vladimir Kondratiev 2013-07-11 18:03:39 +03:00 committed by John W. Linville
parent 4d1ac0721a
commit 03269c658b
1 changed files with 6 additions and 4 deletions
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10
drivers/net/wireless/ath/wil6210/txrx.c
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@ -855,10 +855,12 @@ int wil_tx_complete(struct wil6210_priv *wil, int ringid)
} else {
dma_unmap_page(dev, pa, dmalen, DMA_TO_DEVICE);
}
d->dma.addr.addr_low = 0;
d->dma.addr.addr_high = 0;
d->dma.length = 0;
d->dma.status = TX_DMA_STATUS_DU;
/*
* There is no need to touch HW descriptor:
* - ststus bit TX_DMA_STATUS_DU is set by design,
* so hardware will not try to process this desc.,
* - rest of descriptor will be initialized on Tx.
*/
vring->swtail = wil_vring_next_tail(vring);
done++;
}