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| author | Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com> | 2015-02-01 10:55:12 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2015-02-03 15:36:33 +0200 |
| commit | e59d16c08b3aa147f5c3c664d5dfda77fa93a827 (patch) | |
| tree | 3adc3a02a8068ebb07f14f15ab82f09934e7a647 /drivers/net/wireless | |
| parent | a3c74902082c0e77aaf1065b5489867508db44ca (diff) | |
| download | linux-e59d16c08b3aa147f5c3c664d5dfda77fa93a827.tar.bz2 | |
wil6210: avoid Tx descriptor double write
Non-cacheable Tx descriptor for the last fragment of
multi-fragment frame used to be written back twice.
Refactor code to always write non-cacheable descriptor
only once
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/txrx.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c index 24c4b9a6a004..e37cab1c5a53 100644 --- a/drivers/net/wireless/ath/wil6210/txrx.c +++ b/drivers/net/wireless/ath/wil6210/txrx.c @@ -981,8 +981,6 @@ static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, vring->ctx[i].nr_frags = nr_frags; wil_tx_desc_set_nr_frags(d, nr_frags); - if (nr_frags) - *_d = *d; /* middle segments */ for (; f < nr_frags; f++) { @@ -990,6 +988,7 @@ static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, &skb_shinfo(skb)->frags[f]; int len = skb_frag_size(frag); + *_d = *d; i = (swhead + f + 1) % vring->size; _d = &vring->va[i].tx; pa = skb_frag_dma_map(dev, frag, 0, skb_frag_size(frag), @@ -1003,7 +1002,6 @@ static int wil_tx_vring(struct wil6210_priv *wil, struct vring *vring, * it will succeed here too */ wil_tx_desc_offload_cksum_set(wil, d, skb); - *_d = *d; } /* for the last seg only */ d->dma.d0 |= BIT(DMA_CFG_DESC_TX_0_CMD_EOP_POS); |