[PATCH net v4] mlxbf_gige: Enable the GigE port in mlxbf_gige_open

[PATCH net v4] mlxbf_gige: Enable the GigE port in mlxbf_gige_open

[Asmaa Mnebhi]

At the moment, the GigE port is enabled in the mlxbf_gige_probe
function. If the mlxbf_gige_open is not executed, this could cause
pause frames to increase in the case where there is high backgroud
traffic. This results in clogging the port.
So move enabling the OOB port to mlxbf_gige_open.

Fixes: f92e1869d74e ("Add Mellanox BlueField Gigabit Ethernet driver")
Reviewed-by: David Thompson <davthompson@nvidia.com>
Signed-off-by: Asmaa Mnebhi <asmaa@nvidia.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
---
v3->v4:
- rebase
- Fork this patch from bundle of unrelated bug fixes.
- update the subject format

 .../ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c   | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

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 3385cf1ef9ae..ce50a25c4772 100644
--- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
+++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_main.c
@@ -130,9 +130,15 @@ static int mlxbf_gige_open(struct net_device *netdev)
 {
 	struct mlxbf_gige *priv = netdev_priv(netdev);
 	struct phy_device *phydev = netdev->phydev;
+	u64 control;
 	u64 int_en;
 	int err;
 
+	/* Perform general init of GigE block */
+	control = readq(priv->base + MLXBF_GIGE_CONTROL);
+	control |= MLXBF_GIGE_CONTROL_PORT_EN;
+	writeq(control, priv->base + MLXBF_GIGE_CONTROL);
+
 	err = mlxbf_gige_request_irqs(priv);
 	if (err)
 		return err;
@@ -365,7 +371,6 @@ static int mlxbf_gige_probe(struct platform_device *pdev)
 	void __iomem *plu_base;
 	void __iomem *base;
 	int addr, phy_irq;
-	u64 control;
 	int err;
 
 	base = devm_platform_ioremap_resource(pdev, MLXBF_GIGE_RES_MAC);
@@ -380,11 +385,6 @@ static int mlxbf_gige_probe(struct platform_device *pdev)
 	if (IS_ERR(plu_base))
 		return PTR_ERR(plu_base);
 
-	/* Perform general init of GigE block */
-	control = readq(base + MLXBF_GIGE_CONTROL);
-	control |= MLXBF_GIGE_CONTROL_PORT_EN;
-	writeq(control, base + MLXBF_GIGE_CONTROL);
-
 	netdev = devm_alloc_etherdev(&pdev->dev, sizeof(*priv));
 	if (!netdev)
 		return -ENOMEM;
-- 
2.30.1

Re: [PATCH net v4] mlxbf_gige: Enable the GigE port in mlxbf_gige_open

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@davemloft.net>:

On Fri, 5 Jan 2024 11:00:14 -0500 you wrote:
> At the moment, the GigE port is enabled in the mlxbf_gige_probe
> function. If the mlxbf_gige_open is not executed, this could cause
> pause frames to increase in the case where there is high backgroud
> traffic. This results in clogging the port.
> So move enabling the OOB port to mlxbf_gige_open.
> 
> Fixes: f92e1869d74e ("Add Mellanox BlueField Gigabit Ethernet driver")
> Reviewed-by: David Thompson <davthompson@nvidia.com>
> Signed-off-by: Asmaa Mnebhi <asmaa@nvidia.com>
> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
> 
> [...]

Here is the summary with links:
  - [net,v4] mlxbf_gige: Enable the GigE port in mlxbf_gige_open
    https://git.kernel.org/netdev/net/c/a460f4a68451

You are awesome, thank you!
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