ath10k: enable a HTC debug message during insufficient tx credits

Add an ath10k HTC debug message when insufficient tx credits
are available to send the WMI commands. This is very useful
in debugging issues like 'tx credit starvation' that could
possibly happen with multiclient setup with constant roaming

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.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 9f6a915..f56f604 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -119,6 +119,9 @@ int ath10k_htc_send(struct ath10k_htc *htc,
                credits = DIV_ROUND_UP(skb->len, htc->target_credit_size);
                spin_lock_bh(&htc->tx_lock);
                if (ep->tx_credits < credits) {
+                       ath10k_dbg(ar, ATH10K_DBG_HTC,
+                                  "htc insufficient credits ep %d required %d available %d\n",
+                                  eid, credits, ep->tx_credits);
                        spin_unlock_bh(&htc->tx_lock);
                        ret = -EAGAIN;
                        goto err_pull;