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Message-Id: <ee451d50ccda6965a4fae1d43d9880365036f901.1546958941.git.joabreu@synopsys.com>
Date: Tue, 8 Jan 2019 15:51:07 +0100
From: Jose Abreu <jose.abreu@...opsys.com>
To: netdev@...r.kernel.org
Cc: Jose Abreu <jose.abreu@...opsys.com>,
Joao Pinto <joao.pinto@...opsys.com>,
"David S . Miller" <davem@...emloft.net>,
Giuseppe Cavallaro <peppe.cavallaro@...com>,
Alexandre Torgue <alexandre.torgue@...com>
Subject: [PATCH net 3/5] net: stmmac: Check if CBS is supported before configuring
Check if CBS is currently supported before trying to configure it in HW.
Cc: Joao Pinto <jpinto@...opsys.com>
Cc: David S. Miller <davem@...emloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>
Cc: Alexandre Torgue <alexandre.torgue@...com>
Signed-off-by: Jose Abreu <joabreu@...opsys.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 531294f4978b..58ea18af9813 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
@@ -301,6 +301,8 @@ static int tc_setup_cbs(struct stmmac_priv *priv,
/* Queue 0 is not AVB capable */
if (queue <= 0 || queue >= tx_queues_count)
return -EINVAL;
+ if (!priv->dma_cap.av)
+ return -EOPNOTSUPP;
if (priv->speed != SPEED_100 && priv->speed != SPEED_1000)
return -EOPNOTSUPP;
--
2.7.4
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