[PATCH net-next] net: lan966x: Fix the configuration of the pcs

When inserting a SFP that runs at 2.5G, then the Serdes was still
configured to run at 1G. Because the config->speed was 0, and then the
speed of the serdes was not configured at all, it was using the default
value which is 1G. This patch stop calling the serdes function set_speed
and allow the serdes to figure out the speed based on the interface
type.

Fixes: d28d6d2e37d10d ("net: lan966x: add port module support")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
 drivers/net/ethernet/microchip/lan966x/lan966x_port.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_port.c b/drivers/net/ethernet/microchip/lan966x/lan966x_port.c
index 2ddb20585d40..237555845a52 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_port.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_port.c

@@ -331,7 +331,6 @@ int lan966x_port_pcs_set(struct lan966x_port *port,
 	struct lan966x *lan966x = port->lan966x;
 	bool inband_aneg = false;
 	bool outband;
-	int err;
 
 	if (config->inband) {
 		if (config->portmode == PHY_INTERFACE_MODE_SGMII ||

@@ -341,11 +340,6 @@ int lan966x_port_pcs_set(struct lan966x_port *port,
 			 config->autoneg)
 			inband_aneg = true; /* Clause-37 in-band-aneg */
 
-		if (config->speed > 0) {
-			err = phy_set_speed(port->serdes, config->speed);
-			if (err)
-				return err;
-		}
 		outband = false;
 	} else {
 		outband = true;

-- 
2.33.0

Hello:

This patch was applied to netdev/net-next.git (master)
by David S. Miller [off-list ref]:

On Sat, 11 Dec 2021 22:44:20 +0100 you wrote:

When inserting a SFP that runs at 2.5G, then the Serdes was still
configured to run at 1G. Because the config->speed was 0, and then the
speed of the serdes was not configured at all, it was using the default
value which is 1G. This patch stop calling the serdes function set_speed
and allow the serdes to figure out the speed based on the interface
type.

[...]

Here is the summary with links:
  - [net-next] net: lan966x: Fix the configuration of the pcs
    https://git.kernel.org/netdev/net-next/c/b26980ab2a97

You are awesome, thank you!
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