diff mbox series

[net-next,v1] mlxbf_gige: clear valid_polarity upon open

Message ID 20210913155711.8732-1-davthompson@nvidia.com
State Superseded
Headers show
Series [net-next,v1] mlxbf_gige: clear valid_polarity upon open | expand

Commit Message

David Thompson Sept. 13, 2021, 3:57 p.m. UTC 
This patch ensures that the driver's valid_polarity
is cleared during the open() method so that it always
matches the receive polarity used by hardware.

Reviewed-by: Asmaa Mnebhi <asmaa@nvidia.com>
Signed-off-by: David Thompson <davthompson@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
index 3e85b17f5857..6704f5c1aa32 100644
--- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
+++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
@@ -142,6 +142,13 @@  static int mlxbf_gige_open(struct net_device *netdev)
 	err = mlxbf_gige_clean_port(priv);
 	if (err)
 		goto free_irqs;
+
+	/* Clear driver's valid_polarity to match hardware,
+	 * since the above call to clean_port() resets the
+	 * receive polarity used by hardware.
+	 */
+	priv->valid_polarity = 0;
+
 	err = mlxbf_gige_rx_init(priv);
 	if (err)
 		goto free_irqs;