From: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Date: Thu, 18 Apr 2013 11:33:52 +0000 (+0300)
Subject: wil6210: Use cached copy of Tx descriptor
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4de41bef3e075dbc787f7c53b3562f23295f1d6d;p=linux-beck.git

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>
---

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 = &dd;
 		dma_addr_t pa;
 		struct sk_buff *skb;
+
+		dd = *d1;
+
 		if (!(d->dma.status & TX_DMA_STATUS_DU))
 			break;