[dpdk-stable] [PATCH 2/2] net/sfc: avoid Tx queue setup failure if thresholds are set

[Andrew Rybchenko]

Tx queue prefetch, host and writeback thresholds are used for
performance fine-tuning and not applicable to Solarflare NICs.
It is safe to just log warning and do not fail Tx queue setup
to be more friendly to DPDK applications which hardcode it.

Fixes: b1b7ad933b39 ("net/sfc: set up and release Tx queues")
Cc: stable at dpdk.org

Signed-off-by: Andrew Rybchenko <arybchenko at solarflare.com>
---
 drivers/net/sfc/sfc_tx.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/sfc/sfc_tx.c b/drivers/net/sfc/sfc_tx.c
index 127d59e..d1320f4 100644
--- a/drivers/net/sfc/sfc_tx.c
+++ b/drivers/net/sfc/sfc_tx.c
@@ -79,9 +79,8 @@ sfc_tx_qcheck_conf(struct sfc_adapter *sa, uint16_t nb_tx_desc,
 	if (tx_conf->tx_thresh.pthresh != 0 ||
 	    tx_conf->tx_thresh.hthresh != 0 ||
 	    tx_conf->tx_thresh.wthresh != 0) {
-		sfc_err(sa,
+		sfc_warn(sa,
 			"prefetch/host/writeback thresholds are not supported");
-		rc = EINVAL;
 	}
 
 	if (((flags & ETH_TXQ_FLAGS_NOMULTSEGS) == 0) &&
-- 
2.7.4