[PATCH 06/10] wcn36xx: consider CTRL_EOP bit when looking for valid descriptors

[Daniel Mack]

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 <dan...@zonque.org>
---
 drivers/net/wireless/ath/wcn36xx/dxe.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/wcn36xx/dxe.c 
b/drivers/net/wireless/ath/wcn36xx/dxe.c
index 8c64e05ca3b7..06cfe8d311f3 100644
--- a/drivers/net/wireless/ath/wcn36xx/dxe.c
+++ b/drivers/net/wireless/ath/wcn36xx/dxe.c
@@ -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);
-- 
2.14.3