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>

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);