ath10k: replenish htc tx credits always

There's always at most 2 credits and it makes
little sense to set the
ATH10K_HTC_FLAG_NEED_CREDIT_UPDATE flag
conditionally.

This seems to fix some random issues with tx
credit starvation on WLAN.RM.2.0-00073 I've been
seeing. Note: this isn't related to wmi mgmt tx.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
index d2480c2..85bfa2a 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -86,21 +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)
-{
-       struct ath10k *ar = ep->htc->ar;
-
-       if (!ep->tx_credit_flow_enabled)
-               return false;
-       if (ep->tx_credits >= ep->tx_credits_per_max_message)
-               return false;
-
-       ath10k_dbg(ar, 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)
 {
@@ -111,13 +96,10 @@ static void ath10k_htc_prepare_tx_skb(struct ath10k_htc_ep *ep,
        hdr->eid = ep->eid;
        hdr->len = __cpu_to_le16(skb->len - sizeof(*hdr));
        hdr->flags = 0;
+       hdr->flags |= ATH10K_HTC_FLAG_NEED_CREDIT_UPDATE;
 
        spin_lock_bh(&ep->htc->tx_lock);
        hdr->seq_no = ep->seq_no++;
-
-       if (ath10k_htc_ep_need_credit_update(ep))
-               hdr->flags |= ATH10K_HTC_FLAG_NEED_CREDIT_UPDATE;
-
        spin_unlock_bh(&ep->htc->tx_lock);
 }