[RFTv2 1/5] ath10k: always request htc tx replenishment

[Michal Kazior]

This simplifies tx credit management and tries to
address a problem where driver runs out of credits
and is unable to recover when firmware stalls.

This also makes it a little more easy to track and
debug htc tx credit flow since there should be no
laziness involved.

Signed-off-by: Michal Kazior <michal.kazior at tieto.com>
---
 drivers/net/wireless/ath/ath10k/htc.c | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
index 7f1bccd..c2a290a 100644
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -86,19 +86,6 @@ static void ath10k_htc_notify_tx_completion(struct ath10k_htc_ep *ep,
 	ep->ep_ops.ep_tx_complete(ep->htc->ar, skb);
 }
 
-/* assumes tx_lock is held */
-static bool ath10k_htc_ep_need_credit_update(struct ath10k_htc_ep *ep)
-{
-	if (!ep->tx_credit_flow_enabled)
-		return false;
-	if (ep->tx_credits >= ep->tx_credits_per_max_message)
-		return false;
-
-	ath10k_dbg(ATH10K_DBG_HTC, "HTC: endpoint %d needs credit update\n",
-		   ep->eid);
-	return true;
-}
-
 static void ath10k_htc_prepare_tx_skb(struct ath10k_htc_ep *ep,
 				      struct sk_buff *skb)
 {
@@ -113,7 +100,7 @@ static void ath10k_htc_prepare_tx_skb(struct ath10k_htc_ep *ep,
 	spin_lock_bh(&ep->htc->tx_lock);
 	hdr->seq_no = ep->seq_no++;
 
-	if (ath10k_htc_ep_need_credit_update(ep))
+	if (ep->tx_credit_flow_enabled)
 		hdr->flags |= ATH10K_HTC_FLAG_NEED_CREDIT_UPDATE;
 
 	spin_unlock_bh(&ep->htc->tx_lock);
-- 
1.8.5.3