[PATCH 4.14 113/178] qtnfmac: modify full Tx queue error reporting

From: Greg Kroah-Hartman
Date: Mon Dec 18 2017 - 11:36:21 EST

4.14-stable review patch. If anyone has any objections, please let me know.


From: Sergey Matyukevich <sergey.matyukevich.os@xxxxxxxxxxxxx>

[ Upstream commit e9931f984dd1e80adb3b5e095ef175fe383bc92d ]

Under heavy load it is normal that h/w Tx queue is almost full all the time
and reclaim should be done before transmitting next packet. Warning still
should be reported as well as s/w Tx queues should be stopped in the
case when reclaim failed.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@xxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
drivers/net/wireless/quantenna/qtnfmac/pearl/pcie.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/quantenna/qtnfmac/pearl/pcie.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/pearl/pcie.c
@@ -643,11 +643,11 @@ static int qtnf_tx_queue_ready(struct qt
if (!CIRC_SPACE(priv->tx_bd_w_index, priv->tx_bd_r_index,
priv->tx_bd_num)) {
- pr_err_ratelimited("reclaim full Tx queue\n");

if (!CIRC_SPACE(priv->tx_bd_w_index, priv->tx_bd_r_index,
priv->tx_bd_num)) {
+ pr_warn_ratelimited("reclaim full Tx queue\n");
return 0;