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wcn36xx: consider CTRL_EOP bit when looking for valid descriptors 

In reap_tx_dxes(), when we iterate over the linked descriptors, only
consider such valid that have WCN36xx_DXE_CTRL_EOP set.

This is what the prima downstream driver is doing as well.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Daniel Mack 2018-05-23 11:14:44 +03:00 committed by Kalle Valo
parent ce1d4be82b
commit 18c7ed1388
1 changed files with 3 additions and 1 deletions
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4
drivers/net/wireless/ath/wcn36xx/dxe.c
View File

@ -370,7 +370,9 @@ static void reap_tx_dxes(struct wcn36xx *wcn, struct wcn36xx_dxe_ch *ch)
do {
if (READ_ONCE(ctl->desc->ctrl) & WCN36xx_DXE_CTRL_VLD)
break;
if (ctl->skb) {
if (ctl->skb &&
READ_ONCE(ctl->desc->ctrl) & WCN36xx_DXE_CTRL_EOP) {
dma_unmap_single(wcn->dev, ctl->desc->src_addr_l,
ctl->skb->len, DMA_TO_DEVICE);
info = IEEE80211_SKB_CB(ctl->skb);