wil6210: Use cached copy of Tx descriptor

Original Tx descriptor stored is in non-cached area for DMA;
copy it to the cached memory to speed-up access

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c
index 3d9afc560246..91454a4ec8bf 100644
--- a/drivers/net/wireless/ath/wil6210/txrx.c
+++ b/drivers/net/wireless/ath/wil6210/txrx.c
@@ -789,9 +789,14 @@ void wil_tx_complete(struct wil6210_priv *wil, int ringid)
         wil_dbg_txrx(wil, "%s(%d)\n", __func__, ringid);
 
         while (!wil_vring_is_empty(vring)) {
-                volatile struct vring_tx_desc *d = &vring->va[vring->swtail].tx;
+                volatile struct vring_tx_desc *d1 =
+                                              &vring->va[vring->swtail].tx;
+                struct vring_tx_desc dd, *d = ⅆ
                 dma_addr_t pa;
                 struct sk_buff *skb;
+
+                dd = *d1;
+
                 if (!(d->dma.status & TX_DMA_STATUS_DU))
                         break;